156556644 has 12 divisors (see below), whose sum is σ = 365298864. Its totient is φ = 52185544.

The previous prime is 156556627. The next prime is 156556651. The reversal of 156556644 is 446655651.

156556644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 156556596 and 156556605.

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, 6523182 + ... + 6523205.

It is an arithmetic number, because the mean of its divisors is an integer number (30441572).

Almost surely, 2^156556644 is an apocalyptic number.

It is an amenable number.

156556644 is an abundant number, since it is smaller than the sum of its proper divisors (208742220).

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

156556644 is a wasteful number, since it uses less digits than its factorization.

156556644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046394 (or 13046392 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 156556644 is about 12512.2597479432. The cubic root of 156556644 is about 538.9607859828.

The spelling of 156556644 in words is "one hundred fifty-six million, five hundred fifty-six thousand, six hundred forty-four".