136215756 has 30 divisors (see below), whose sum is σ = 356095740. Its totient is φ = 45405144.

The previous prime is 136215743. The next prime is 136215773. The reversal of 136215756 is 657512631.

136215756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 136215756.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 209886 + ... + 210533.

It is an arithmetic number, because the mean of its divisors is an integer number (11869858).

Almost surely, 2^136215756 is an apocalyptic number.

It is an amenable number.

136215756 is an abundant number, since it is smaller than the sum of its proper divisors (219879984).

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

136215756 is a wasteful number, since it uses less digits than its factorization.

136215756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420435 (or 420424 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 136215756 is about 11671.1505859534. The cubic root of 136215756 is about 514.5281202490.

The spelling of 136215756 in words is "one hundred thirty-six million, two hundred fifteen thousand, seven hundred fifty-six".