156138696 has 72 divisors (see below), whose sum is σ = 491927670. Its totient is φ = 44610048.

The previous prime is 156138683. The next prime is 156138707. The reversal of 156138696 is 696831651.

156138696 is a `hidden beast` number, since 1 + 561 + 3 + 86 + 9 + 6 = 666.

156138696 is digitally balanced in base 2, 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., 95765796 + 60372900 = 9786^2 + 7770^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18601 + ... + 25656.

Almost surely, 2^156138696 is an apocalyptic number.

It is an amenable number.

156138696 is an abundant number, since it is smaller than the sum of its proper divisors (335788974).

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

156138696 is a wasteful number, since it uses less digits than its factorization.

156138696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44283 (or 44269 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 156138696 is about 12495.5470468483. The cubic root of 156138696 is about 538.4807502889.

The spelling of 156138696 in words is "one hundred fifty-six million, one hundred thirty-eight thousand, six hundred ninety-six".