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19208000 = 265374
BaseRepresentation
bin100100101000…
…1011101000000
31100010212102102
41021101131000
514404124000
61523405532
7322160000
oct111213500
940125372
1019208000
11a92a289
1265238a8
133c96aa6
1427a0000
151a463d5
hex1251740

19208000 has 140 divisors (see below), whose sum is σ = 55493412. Its totient is φ = 6585600.

The previous prime is 19207987. The next prime is 19208023. The reversal of 19208000 is 80291.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 18593344 = 784^2 + 4312^2 .

It is a tau number, because it is divible by the number of its divisors (140).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2743997 + ... + 2744003.

Almost surely, 219208000 is an apocalyptic number.

19208000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19208000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27746706).

19208000 is an abundant number, since it is smaller than the sum of its proper divisors (36285412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19208000 is an frugal number, since it uses more digits than its factorization.

19208000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 19208000 is about 4382.6932358996. The cubic root of 19208000 is about 267.8103655881.

Multiplying 19208000 by its sum of digits (20), we get a 4-th power (384160000 = 1404).

19208000 divided by its sum of digits (20) gives a square (960400 = 9802).

Adding to 19208000 its reverse (80291), we get a palindrome (19288291).

The spelling of 19208000 in words is "nineteen million, two hundred eight thousand".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 49 50 56 64 70 80 98 100 112 125 140 160 175 196 200 224 245 250 280 320 343 350 392 400 448 490 500 560 686 700 784 800 875 980 1000 1120 1225 1372 1400 1568 1600 1715 1750 1960 2000 2240 2401 2450 2744 2800 3136 3430 3500 3920 4000 4802 4900 5488 5600 6125 6860 7000 7840 8000 8575 9604 9800 10976 11200 12005 12250 13720 14000 15680 17150 19208 19600 21952 24010 24500 27440 28000 34300 38416 39200 42875 48020 49000 54880 56000 60025 68600 76832 78400 85750 96040 98000 109760 120050 137200 153664 171500 192080 196000 240100 274400 300125 343000 384160 392000 480200 548800 600250 686000 768320 960400 1200500 1372000 1920800 2401000 2744000 3841600 4802000 9604000 19208000