156220072 has 16 divisors (see below), whose sum is σ = 310143060. Its totient is φ = 73515264.

The previous prime is 156220063. The next prime is 156220087. The reversal of 156220072 is 270022651.

It can be written as a sum of positive squares in 2 ways, for example, as 128278276 + 27941796 = 11326^2 + 5286^2 .

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, 574203 + ... + 574474.

Almost surely, 2^156220072 is an apocalyptic number.

It is an amenable number.

156220072 is a deficient number, since it is larger than the sum of its proper divisors (153922988).

156220072 is a wasteful number, since it uses less digits than its factorization.

156220072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148700 (or 1148696 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 156220072 is about 12498.8028226707. The cubic root of 156220072 is about 538.5742820874.

The spelling of 156220072 in words is "one hundred fifty-six million, two hundred twenty thousand, seventy-two".