30051968 has 16 divisors (see below), whose sum is σ = 59869410. Its totient is φ = 15025920.

The previous prime is 30051943. The next prime is 30051997. The reversal of 30051968 is 86915003.

It can be written as a sum of positive squares in only one way, i.e., 28815424 + 1236544 = 5368^2 + 1112^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117263 + ... + 117518.

Almost surely, 2^30051968 is an apocalyptic number.

It is an amenable number.

30051968 is a deficient number, since it is larger than the sum of its proper divisors (29817442).

30051968 is an equidigital number, since it uses as much as digits as its factorization.

30051968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234795 (or 234783 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 30051968 is about 5481.9675300023. The cubic root of 30051968 is about 310.9025656046.

The spelling of 30051968 in words is "thirty million, fifty-one thousand, nine hundred sixty-eight".