30972394 has 8 divisors (see below), whose sum is σ = 48903840. Its totient is φ = 14671116.

The previous prime is 30972313. The next prime is 30972407. The reversal of 30972394 is 49327903.

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

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, 407494 + ... + 407569.

It is an arithmetic number, because the mean of its divisors is an integer number (6112980).

Almost surely, 2^30972394 is an apocalyptic number.

30972394 is a deficient number, since it is larger than the sum of its proper divisors (17931446).

30972394 is a wasteful number, since it uses less digits than its factorization.

30972394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815084.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 30972394 is about 5565.2847186824. The cubic root of 30972394 is about 314.0447892078.

The spelling of 30972394 in words is "thirty million, nine hundred seventy-two thousand, three hundred ninety-four".