215113164 has 24 divisors (see below), whose sum is σ = 573635328. Its totient is φ = 61460880.

The previous prime is 215113163. The next prime is 215113169. The reversal of 215113164 is 461311512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (215113163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280352 + ... + 1280519.

It is an arithmetic number, because the mean of its divisors is an integer number (23901472).

Almost surely, 2^215113164 is an apocalyptic number.

It is an amenable number.

215113164 is an abundant number, since it is smaller than the sum of its proper divisors (358522164).

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

215113164 is a wasteful number, since it uses less digits than its factorization.

215113164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560885 (or 2560883 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 215113164 is about 14666.7366513482. The cubic root of 215113164 is about 599.1777291882.

Adding to 215113164 its reverse (461311512), we get a palindrome (676424676).

The spelling of 215113164 in words is "two hundred fifteen million, one hundred thirteen thousand, one hundred sixty-four".