30969992 has 32 divisors (see below), whose sum is σ = 61240320. Its totient is φ = 14661120.

The previous prime is 30969979. The next prime is 30969997. The reversal of 30969992 is 29996903.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (30969997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10328 + ... + 12984.

It is an arithmetic number, because the mean of its divisors is an integer number (1913760).

Almost surely, 2^30969992 is an apocalyptic number.

It is an amenable number.

30969992 is a deficient number, since it is larger than the sum of its proper divisors (30270328).

30969992 is a wasteful number, since it uses less digits than its factorization.

30969992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 30969992 is about 5565.0689124215. The cubic root of 30969992 is about 314.0366706331.

The spelling of 30969992 in words is "thirty million, nine hundred sixty-nine thousand, nine hundred ninety-two".