156198728 has 16 divisors (see below), whose sum is σ = 334711680. Its totient is φ = 66942288.

The previous prime is 156198701. The next prime is 156198733. The reversal of 156198728 is 827891651.

156198728 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 1394576 + ... + 1394687.

It is an arithmetic number, because the mean of its divisors is an integer number (20919480).

Almost surely, 2^156198728 is an apocalyptic number.

It is an amenable number.

156198728 is an abundant number, since it is smaller than the sum of its proper divisors (178512952).

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

156198728 is a wasteful number, since it uses less digits than its factorization.

156198728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789276 (or 2789272 counting only the distinct ones).

The product of its digits is 241920, while the sum is 47.

The square root of 156198728 is about 12497.9489517280. The cubic root of 156198728 is about 538.5497529026.

The spelling of 156198728 in words is "one hundred fifty-six million, one hundred ninety-eight thousand, seven hundred twenty-eight".