156549428 has 12 divisors (see below), whose sum is σ = 313098912. Its totient is φ = 67092600.

The previous prime is 156549427. The next prime is 156549443. The reversal of 156549428 is 824945651.

156549428 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156549427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2795498 + ... + 2795553.

It is an arithmetic number, because the mean of its divisors is an integer number (26091576).

Almost surely, 2^156549428 is an apocalyptic number.

It is an amenable number.

156549428 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.

156549428 is a wasteful number, since it uses less digits than its factorization.

156549428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5591062 (or 5591060 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 156549428 is about 12511.9713874353. The cubic root of 156549428 is about 538.9525052722.

The spelling of 156549428 in words is "one hundred fifty-six million, five hundred forty-nine thousand, four hundred twenty-eight".