156139472 has 10 divisors (see below), whose sum is σ = 302520258. Its totient is φ = 78069728.

The previous prime is 156139421. The next prime is 156139507. The reversal of 156139472 is 274931651.

156139472 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 142181776 + 13957696 = 11924^2 + 3736^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4879343 + ... + 4879374.

Almost surely, 2^156139472 is an apocalyptic number.

It is an amenable number.

156139472 is a deficient number, since it is larger than the sum of its proper divisors (146380786).

156139472 is an equidigital number, since it uses as much as digits as its factorization.

156139472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9758725 (or 9758719 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 156139472 is about 12495.5780978713. The cubic root of 156139472 is about 538.4816423598.

The spelling of 156139472 in words is "one hundred fifty-six million, one hundred thirty-nine thousand, four hundred seventy-two".