213164620 has 24 divisors (see below), whose sum is σ = 448401744. Its totient is φ = 85121856.

The previous prime is 213164593. The next prime is 213164639. The reversal of 213164620 is 26461312.

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, 3567 + ... + 20953.

It is an arithmetic number, because the mean of its divisors is an integer number (18683406).

Almost surely, 2^213164620 is an apocalyptic number.

213164620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213164620 is an abundant number, since it is smaller than the sum of its proper divisors (235237124).

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

213164620 is a wasteful number, since it uses less digits than its factorization.

213164620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18009 (or 18007 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 213164620 is about 14600.1582183208. The cubic root of 213164620 is about 597.3630761801.

The spelling of 213164620 in words is "two hundred thirteen million, one hundred sixty-four thousand, six hundred twenty".