213397888 has 32 divisors (see below), whose sum is σ = 463779720. Its totient is φ = 96998400.

The previous prime is 213397871. The next prime is 213397903. The reversal of 213397888 is 888793312.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent 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, 74373 + ... + 77188.

Almost surely, 2^213397888 is an apocalyptic number.

It is an amenable number.

213397888 is an abundant number, since it is smaller than the sum of its proper divisors (250381832).

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

213397888 is a wasteful number, since it uses less digits than its factorization.

213397888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151586 (or 151574 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 213397888 is about 14608.1445775978. The cubic root of 213397888 is about 597.5808967106.

The spelling of 213397888 in words is "two hundred thirteen million, three hundred ninety-seven thousand, eight hundred eighty-eight".