215884134 has 12 divisors (see below), whose sum is σ = 467748996. Its totient is φ = 71961372.

The previous prime is 215884129. The next prime is 215884153. The reversal of 215884134 is 431488512.

215884134 is a `hidden beast` number, since 2 + 1 + 588 + 41 + 34 = 666.

215884134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×215884134³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5996764 + ... + 5996799.

It is an arithmetic number, because the mean of its divisors is an integer number (38979083).

Almost surely, 2^215884134 is an apocalyptic number.

215884134 is an abundant number, since it is smaller than the sum of its proper divisors (251864862).

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

215884134 is a wasteful number, since it uses less digits than its factorization.

215884134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11993571 (or 11993568 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 215884134 is about 14692.9960865713. The cubic root of 215884134 is about 599.8926974781.

The spelling of 215884134 in words is "two hundred fifteen million, eight hundred eighty-four thousand, one hundred thirty-four".