30620972 has 12 divisors (see below), whose sum is σ = 53639376. Its totient is φ = 15295440.

The previous prime is 30620971. The next prime is 30620977. The reversal of 30620972 is 27902603.

It is not an unprimeable number, because it can be changed into a prime (30620971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697 + ... + 8007.

It is an arithmetic number, because the mean of its divisors is an integer number (4469948).

Almost surely, 2^30620972 is an apocalyptic number.

It is an amenable number.

30620972 is a deficient number, since it is larger than the sum of its proper divisors (23018404).

30620972 is a wasteful number, since it uses less digits than its factorization.

30620972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7528 (or 7526 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30620972 is about 5533.6219603439. The cubic root of 30620972 is about 312.8525199455.

The spelling of 30620972 in words is "thirty million, six hundred twenty thousand, nine hundred seventy-two".