30972465 has 12 divisors (see below), whose sum is σ = 53685684. Its totient is φ = 16518624.

The previous prime is 30972449. The next prime is 30972497. The reversal of 30972465 is 56427903.

It can be written as a sum of positive squares in 2 ways, for example, as 3504384 + 27468081 = 1872^2 + 5241^2 .

It is not a de Polignac number, because 30972465 - 2⁴ = 30972449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 344094 + ... + 344183.

It is an arithmetic number, because the mean of its divisors is an integer number (4473807).

Almost surely, 2^30972465 is an apocalyptic number.

It is an amenable number.

30972465 is a deficient number, since it is larger than the sum of its proper divisors (22713219).

30972465 is a wasteful number, since it uses less digits than its factorization.

30972465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688288 (or 688285 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 30972465 is about 5565.2910975078. The cubic root of 30972465 is about 314.0450291759.

The spelling of 30972465 in words is "thirty million, nine hundred seventy-two thousand, four hundred sixty-five".