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30664612 = 221123157193
BaseRepresentation
bin111010011111…
…0011110100100
32010200220221101
41310332132210
530322231422
63013125444
7521434126
oct164763644
963626841
1030664612
1116344860
12a329884
136478654
144103216
152a5ac27
hex1d3e7a4

30664612 has 48 divisors (see below), whose sum is σ = 61794432. Its totient is φ = 13178880.

The previous prime is 30664609. The next prime is 30664637. The reversal of 30664612 is 21646603.

It is a super-2 number, since 2×306646122 = 1880636858221088, which contains 22 as substring.

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, 158788 + ... + 158980.

It is an arithmetic number, because the mean of its divisors is an integer number (1287384).

Almost surely, 230664612 is an apocalyptic number.

It is an amenable number.

30664612 is an abundant number, since it is smaller than the sum of its proper divisors (31129820).

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

30664612 is a wasteful number, since it uses less digits than its factorization.

30664612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 30664612 is about 5537.5637242383. The cubic root of 30664612 is about 313.0010717639.

Subtracting from 30664612 its reverse (21646603), we obtain a square (9018009 = 30032).

The spelling of 30664612 in words is "thirty million, six hundred sixty-four thousand, six hundred twelve".

Divisors: 1 2 4 11 22 23 44 46 92 157 193 253 314 386 506 628 772 1012 1727 2123 3454 3611 4246 4439 6908 7222 8492 8878 14444 17756 30301 39721 48829 60602 79442 97658 121204 158884 195316 333311 666622 696923 1333244 1393846 2787692 7666153 15332306 30664612