156972204 has 72 divisors (see below), whose sum is σ = 410312448. Its totient is φ = 50561280.

The previous prime is 156972197. The next prime is 156972239. The reversal of 156972204 is 402279651.

156972204 is a `hidden beast` number, since 1 + 569 + 72 + 20 + 4 = 666.

156972204 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 (36).

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, 254104 + ... + 254720.

It is an arithmetic number, because the mean of its divisors is an integer number (5698784).

Almost surely, 2^156972204 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 156972204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205156224).

156972204 is an abundant number, since it is smaller than the sum of its proper divisors (253340244).

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

156972204 is a wasteful number, since it uses less digits than its factorization.

156972204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 156972204 is about 12528.8548558917. The cubic root of 156972204 is about 539.4372326391.

The spelling of 156972204 in words is "one hundred fifty-six million, nine hundred seventy-two thousand, two hundred four".