215240536 has 48 divisors (see below), whose sum is σ = 497097000. Its totient is φ = 86817024.

The previous prime is 215240449. The next prime is 215240551. The reversal of 215240536 is 635042512.

215240536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9486 + ... + 22813.

Almost surely, 2^215240536 is an apocalyptic number.

It is an amenable number.

215240536 is an abundant number, since it is smaller than the sum of its proper divisors (281856464).

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

215240536 is a wasteful number, since it uses less digits than its factorization.

215240536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32336 (or 32325 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 215240536 is about 14671.0782153187. The cubic root of 215240536 is about 599.2959668112.

The spelling of 215240536 in words is "two hundred fifteen million, two hundred forty thousand, five hundred thirty-six".