30523972 has 12 divisors (see below), whose sum is σ = 54425196. Its totient is φ = 14973920.

The previous prime is 30523949. The next prime is 30523981. The reversal of 30523972 is 27932503.

It can be written as a sum of positive squares in 2 ways, for example, as 19660356 + 10863616 = 4434^2 + 3296^2 .

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, 71779 + ... + 72202.

It is an arithmetic number, because the mean of its divisors is an integer number (4535433).

Almost surely, 2^30523972 is an apocalyptic number.

It is an amenable number.

30523972 is a deficient number, since it is larger than the sum of its proper divisors (23901224).

30523972 is a wasteful number, since it uses less digits than its factorization.

30523972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144038 (or 144036 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 30523972 is about 5524.8504052146. The cubic root of 30523972 is about 312.5218229027.

The spelling of 30523972 in words is "thirty million, five hundred twenty-three thousand, nine hundred seventy-two".