156628979 has 8 divisors (see below), whose sum is σ = 172792032. Its totient is φ = 141053760.

The previous prime is 156628943. The next prime is 156629003. The reversal of 156628979 is 979826651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156628979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156628979.

It is not an unprimeable number, because it can be changed into a prime (156628909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146399 + ... + 147464.

It is an arithmetic number, because the mean of its divisors is an integer number (21599004).

Almost surely, 2^156628979 is an apocalyptic number.

156628979 is a deficient number, since it is larger than the sum of its proper divisors (16163053).

156628979 is a wasteful number, since it uses less digits than its factorization.

156628979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293917.

The product of its digits is 1632960, while the sum is 53.

The square root of 156628979 is about 12515.1499791253. The cubic root of 156628979 is about 539.0437798537.

The spelling of 156628979 in words is "one hundred fifty-six million, six hundred twenty-eight thousand, nine hundred seventy-nine".