30972580 has 24 divisors (see below), whose sum is σ = 67286520. Its totient is φ = 11961600.

The previous prime is 30972553. The next prime is 30972587. The reversal of 30972580 is 8527903.

It can be written as a sum of positive squares in 4 ways, for example, as 788544 + 30184036 = 888^2 + 5494^2 .

It is not an unprimeable number, because it can be changed into a prime (30972587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26121 + ... + 27280.

It is an arithmetic number, because the mean of its divisors is an integer number (2803605).

Almost surely, 2^30972580 is an apocalyptic number.

It is an amenable number.

30972580 is an abundant number, since it is smaller than the sum of its proper divisors (36313940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30972580 is a wasteful number, since it uses less digits than its factorization.

30972580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53439 (or 53437 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 30972580 is about 5565.3014293927. The cubic root of 30972580 is about 314.0454178559.

The spelling of 30972580 in words is "thirty million, nine hundred seventy-two thousand, five hundred eighty".