156868224 has 64 divisors (see below), whose sum is σ = 417987840. Its totient is φ = 52125696.

The previous prime is 156868219. The next prime is 156868247. The reversal of 156868224 is 422868651.

156868224 is digitally balanced in base 3, 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 (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232752 + ... + 233424.

It is an arithmetic number, because the mean of its divisors is an integer number (6531060).

Almost surely, 2^156868224 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 156868224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208993920).

156868224 is an abundant number, since it is smaller than the sum of its proper divisors (261119616).

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

156868224 is an equidigital number, since it uses as much as digits as its factorization.

156868224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1285 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 156868224 is about 12524.7045474135. The cubic root of 156868224 is about 539.3180967421.

The spelling of 156868224 in words is "one hundred fifty-six million, eight hundred sixty-eight thousand, two hundred twenty-four".