213256610 has 32 divisors (see below), whose sum is σ = 445900032. Its totient is φ = 71916480.

The previous prime is 213256609. The next prime is 213256613. The reversal of 213256610 is 16652312.

It is a self number, because there is not a number n which added to its sum of digits gives 213256610.

It is not an unprimeable number, because it can be changed into a prime (213256613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20702 + ... + 29241.

It is an arithmetic number, because the mean of its divisors is an integer number (13934376).

Almost surely, 2^213256610 is an apocalyptic number.

213256610 is an abundant number, since it is smaller than the sum of its proper divisors (232643422).

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

213256610 is a wasteful number, since it uses less digits than its factorization.

213256610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50018.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 213256610 is about 14603.3081868459. The cubic root of 213256610 is about 597.4489933875.

The spelling of 213256610 in words is "two hundred thirteen million, two hundred fifty-six thousand, six hundred ten".