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18034680 = 23351371097
BaseRepresentation
bin100010011001…
…0111111111000
31020221020221010
41010302333320
514104102210
61442313520
7306202146
oct104627770
936836833
1018034680
11a1a87a4
1260588a0
133975a11
142576596
1518b3920
hex1132ff8

18034680 has 64 divisors (see below), whose sum is σ = 54548640. Its totient is φ = 4769792.

The previous prime is 18034669. The next prime is 18034697. The reversal of 18034680 is 8643081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15892 + ... + 16988.

Almost surely, 218034680 is an apocalyptic number.

18034680 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 18034680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27274320).

18034680 is an abundant number, since it is smaller than the sum of its proper divisors (36513960).

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

18034680 is a wasteful number, since it uses less digits than its factorization.

18034680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18034680 is about 4246.7257975998. The cubic root of 18034680 is about 262.2423412803.

18034680 divided by its sum of digits (30) gives a triangular number (601156 = T1096).

The spelling of 18034680 in words is "eighteen million, thirty-four thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 137 274 411 548 685 822 1096 1097 1370 1644 2055 2194 2740 3288 3291 4110 4388 5480 5485 6582 8220 8776 10970 13164 16440 16455 21940 26328 32910 43880 65820 131640 150289 300578 450867 601156 751445 901734 1202312 1502890 1803468 2254335 3005780 3606936 4508670 6011560 9017340 18034680