156001636 has 12 divisors (see below), whose sum is σ = 312003328. Its totient is φ = 66857832.

The previous prime is 156001627. The next prime is 156001667. The reversal of 156001636 is 636100651.

156001636 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 5571487 = 156001636 / (1 + 5 + 6 + 0 + 0 + 1 + 6 + 3 + 6).

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, 2785716 + ... + 2785771.

Almost surely, 2^156001636 is an apocalyptic number.

It is an amenable number.

156001636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

156001636 is a wasteful number, since it uses less digits than its factorization.

156001636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571498 (or 5571496 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 156001636 is about 12490.0614890400. The cubic root of 156001636 is about 538.3231430260.

The spelling of 156001636 in words is "one hundred fifty-six million, one thousand, six hundred thirty-six".