156442356 has 72 divisors (see below), whose sum is σ = 467550720. Its totient is φ = 43154496.

The previous prime is 156442309. The next prime is 156442361. The reversal of 156442356 is 653244651.

156442356 is a `hidden beast` number, since 1 + 5 + 644 + 2 + 3 + 5 + 6 = 666.

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 156442356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3396 + ... + 18011.

It is an arithmetic number, because the mean of its divisors is an integer number (6493760).

Almost surely, 2^156442356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156442356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233775360).

156442356 is an abundant number, since it is smaller than the sum of its proper divisors (311108364).

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

156442356 is a wasteful number, since it uses less digits than its factorization.

156442356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21453 (or 21448 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 156442356 is about 12507.6918734033. The cubic root of 156442356 is about 538.8296050386.

The spelling of 156442356 in words is "one hundred fifty-six million, four hundred forty-two thousand, three hundred fifty-six".