213281572 has 12 divisors (see below), whose sum is σ = 426563200. Its totient is φ = 91406376.

The previous prime is 213281567. The next prime is 213281587. The reversal of 213281572 is 275182312.

213281572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

213281572 is an admirable number.

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, 3808572 + ... + 3808627.

Almost surely, 2^213281572 is an apocalyptic number.

It is an amenable number.

213281572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213281572 is a wasteful number, since it uses less digits than its factorization.

213281572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617210 (or 7617208 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 213281572 is about 14604.1628311930. The cubic root of 213281572 is about 597.4723032393.

The spelling of 213281572 in words is "two hundred thirteen million, two hundred eighty-one thousand, five hundred seventy-two".