156637428 has 48 divisors (see below), whose sum is σ = 376630464. Its totient is φ = 50630400.

The previous prime is 156637427. The next prime is 156637457. The reversal of 156637428 is 824736651.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 156637428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156637421) by changing a digit.

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, 260328 + ... + 260928.

It is an arithmetic number, because the mean of its divisors is an integer number (7846468).

Almost surely, 2^156637428 is an apocalyptic number.

It is an amenable number.

156637428 is an abundant number, since it is smaller than the sum of its proper divisors (219993036).

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

156637428 is a wasteful number, since it uses less digits than its factorization.

156637428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232 (or 1230 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 156637428 is about 12515.4875254622. The cubic root of 156637428 is about 539.0534721832.

The spelling of 156637428 in words is "one hundred fifty-six million, six hundred thirty-seven thousand, four hundred twenty-eight".