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30638696 = 2311421827
BaseRepresentation
bin111010011100…
…0001001101000
32010122121101112
41310320021220
530320414241
63012405452
7521265434
oct164701150
963577345
1030638696
1116327340
12a316888
13646990a
1440d79c4
152a531eb
hex1d38268

30638696 has 32 divisors (see below), whose sum is σ = 62894880. Its totient is φ = 13876800.

The previous prime is 30638687. The next prime is 30638719. The reversal of 30638696 is 69683603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36635 + ... + 37461.

It is an arithmetic number, because the mean of its divisors is an integer number (1965465).

Almost surely, 230638696 is an apocalyptic number.

It is an amenable number.

30638696 is an abundant number, since it is smaller than the sum of its proper divisors (32256184).

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

30638696 is a wasteful number, since it uses less digits than its factorization.

30638696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 30638696 is about 5535.2232113981. The cubic root of 30638696 is about 312.9128699626.

The spelling of 30638696 in words is "thirty million, six hundred thirty-eight thousand, six hundred ninety-six".

Divisors: 1 2 4 8 11 22 44 88 421 827 842 1654 1684 3308 3368 4631 6616 9097 9262 18194 18524 36388 37048 72776 348167 696334 1392668 2785336 3829837 7659674 15319348 30638696