30572738 has 16 divisors (see below), whose sum is σ = 53300160. Its totient is φ = 12880176.

The previous prime is 30572719. The next prime is 30572741. The reversal of 30572738 is 83727503.

It is a junction number, because it is equal to n+sod(n) for n = 30572698 and 30572707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17681 + ... + 19332.

It is an arithmetic number, because the mean of its divisors is an integer number (3331260).

Almost surely, 2^30572738 is an apocalyptic number.

30572738 is a deficient number, since it is larger than the sum of its proper divisors (22727422).

30572738 is a wasteful number, since it uses less digits than its factorization.

30572738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37081.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 30572738 is about 5529.2619760688. The cubic root of 30572738 is about 312.6881657170.

The spelling of 30572738 in words is "thirty million, five hundred seventy-two thousand, seven hundred thirty-eight".