30972406 has 8 divisors (see below), whose sum is σ = 48060720. Its totient is φ = 14952168.

The previous prime is 30972313. The next prime is 30972407. The reversal of 30972406 is 60427903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30972407) 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, 266946 + ... + 267061.

It is an arithmetic number, because the mean of its divisors is an integer number (6007590).

Almost surely, 2^30972406 is an apocalyptic number.

30972406 is a deficient number, since it is larger than the sum of its proper divisors (17088314).

30972406 is a wasteful number, since it uses less digits than its factorization.

30972406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534038.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30972406 is about 5565.2857967943. The cubic root of 30972406 is about 314.0448297658.

The spelling of 30972406 in words is "thirty million, nine hundred seventy-two thousand, four hundred six".