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30608000 = 27531913
BaseRepresentation
bin111010011000…
…0101010000000
32010121001021122
41310300222000
530313424000
63012011412
7521110103
oct164605200
963531248
1030608000
1116306275
12a300b68
136458957
1440ca73a
152a49085
hex1d30a80

30608000 has 64 divisors (see below), whose sum is σ = 76138920. Its totient is φ = 12236800.

The previous prime is 30607979. The next prime is 30608023. The reversal of 30608000 is 80603.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15178816 + 15429184 = 3896^2 + 3928^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 30608000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15044 + ... + 16956.

Almost surely, 230608000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30608000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38069460).

30608000 is an abundant number, since it is smaller than the sum of its proper divisors (45530920).

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

30608000 is an equidigital number, since it uses as much as digits as its factorization.

30608000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1920 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 30608000 is about 5532.4497286464. The cubic root of 30608000 is about 312.8083356731.

Adding to 30608000 its reverse (80603), we get a palindrome (30688603).

The spelling of 30608000 in words is "thirty million, six hundred eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 320 400 500 640 800 1000 1600 1913 2000 3200 3826 4000 7652 8000 9565 15304 16000 19130 30608 38260 47825 61216 76520 95650 122432 153040 191300 239125 244864 306080 382600 478250 612160 765200 956500 1224320 1530400 1913000 3060800 3826000 6121600 7652000 15304000 30608000