30572973 has 6 divisors (see below), whose sum is σ = 44160974. Its totient is φ = 20381976.

The previous prime is 30572963. The next prime is 30572981. The reversal of 30572973 is 37927503.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21734244 + 8838729 = 4662^2 + 2973^2 .

It is not a de Polignac number, because 30572973 - 2⁶ = 30572909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30572903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1698490 + ... + 1698507.

Almost surely, 2^30572973 is an apocalyptic number.

It is an amenable number.

30572973 is a deficient number, since it is larger than the sum of its proper divisors (13588001).

30572973 is a wasteful number, since it uses less digits than its factorization.

30572973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397003 (or 3397000 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 30572973 is about 5529.2832266036. The cubic root of 30572973 is about 312.6889668832.

The spelling of 30572973 in words is "thirty million, five hundred seventy-two thousand, nine hundred seventy-three".