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30372868 = 2219399643
BaseRepresentation
bin111001111011…
…1010000000100
32010011002202001
41303313100010
530233412433
63002555044
7516110431
oct163672004
963132661
1030372868
1116165649
12a208a84
1363a5916
144068b88
1529ee57d
hex1cf7404

30372868 has 12 divisors (see below), whose sum is σ = 55950160. Its totient is φ = 14387112.

The previous prime is 30372847. The next prime is 30372907. The reversal of 30372868 is 86827303.

It is a super-2 number, since 2×303728682 = 1845022221090848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199746 + ... + 199897.

Almost surely, 230372868 is an apocalyptic number.

30372868 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30372868 is a deficient number, since it is larger than the sum of its proper divisors (25577292).

30372868 is a wasteful number, since it uses less digits than its factorization.

30372868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399666 (or 399664 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 30372868 is about 5511.1584989002. The cubic root of 30372868 is about 312.0052733056.

The spelling of 30372868 in words is "thirty million, three hundred seventy-two thousand, eight hundred sixty-eight".

Divisors: 1 2 4 19 38 76 399643 799286 1598572 7593217 15186434 30372868