215888 has 20 divisors (see below), whose sum is σ = 425568. Its totient is φ = 106080.

The previous prime is 215863. The next prime is 215893. The reversal of 215888 is 888512.

It is a super-3 number, since 3×215888³ = 30186083133321216, which contains 333 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 215888.

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, 1583 + ... + 1713.

2²¹⁵⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

215888 is a deficient number, since it is larger than the sum of its proper divisors (209680).

215888 is a wasteful number, since it uses less digits than its factorization.

215888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

The product of its digits is 5120, while the sum is 32.

The square root of 215888 is about 464.6374931062. The cubic root of 215888 is about 59.9896278367.

The spelling of 215888 in words is "two hundred fifteen thousand, eight hundred eighty-eight".