156638328 has 64 divisors (see below), whose sum is σ = 488229120. Its totient is φ = 40684800.

The previous prime is 156638297. The next prime is 156638351. The reversal of 156638328 is 823836651.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 156638328.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40533 + ... + 44228.

It is an arithmetic number, because the mean of its divisors is an integer number (7628580).

Almost surely, 2^156638328 is an apocalyptic number.

It is an amenable number.

156638328 is an abundant number, since it is smaller than the sum of its proper divisors (331590792).

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

156638328 is a wasteful number, since it uses less digits than its factorization.

156638328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84788 (or 84784 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 156638328 is about 12515.5234808617. The cubic root of 156638328 is about 539.0545046039.

The spelling of 156638328 in words is "one hundred fifty-six million, six hundred thirty-eight thousand, three hundred twenty-eight".