214878164 has 12 divisors (see below), whose sum is σ = 398156724. Its totient is φ = 101119104.

The previous prime is 214878127. The next prime is 214878193. The reversal of 214878164 is 461878412.

It can be written as a sum of positive squares in 2 ways, for example, as 158508100 + 56370064 = 12590^2 + 7508^2 .

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, 1579919 + ... + 1580054.

It is an arithmetic number, because the mean of its divisors is an integer number (33179727).

Almost surely, 2^214878164 is an apocalyptic number.

It is an amenable number.

214878164 is a deficient number, since it is larger than the sum of its proper divisors (183278560).

214878164 is a wasteful number, since it uses less digits than its factorization.

214878164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159994 (or 3159992 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 214878164 is about 14658.7231367538. The cubic root of 214878164 is about 598.9594594651.

The spelling of 214878164 in words is "two hundred fourteen million, eight hundred seventy-eight thousand, one hundred sixty-four".