30871372 has 24 divisors (see below), whose sum is σ = 63005600. Its totient is φ = 13230000.

The previous prime is 30871369. The next prime is 30871397. The reversal of 30871372 is 27317803.

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, 9879 + ... + 12622.

Almost surely, 2^30871372 is an apocalyptic number.

It is an amenable number.

30871372 is an abundant number, since it is smaller than the sum of its proper divisors (32134228).

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

30871372 is a wasteful number, since it uses less digits than its factorization.

30871372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22526 (or 22510 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 30871372 is about 5556.2012202583. The cubic root of 30871372 is about 313.7029795729.

It can be divided in two parts, 3087 and 1372, that multiplied together give a square (4235364 = 2058²).

The spelling of 30871372 in words is "thirty million, eight hundred seventy-one thousand, three hundred seventy-two".