158977428 has 12 divisors (see below), whose sum is σ = 370947360. Its totient is φ = 52992472.

The previous prime is 158977417. The next prime is 158977477. The reversal of 158977428 is 824779851.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×158977428² = 50547645226990368, which contains 22 as substring.

It is a congruent number.

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, 6624048 + ... + 6624071.

It is an arithmetic number, because the mean of its divisors is an integer number (30912280).

Almost surely, 2^158977428 is an apocalyptic number.

It is an amenable number.

158977428 is an abundant number, since it is smaller than the sum of its proper divisors (211969932).

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

158977428 is a wasteful number, since it uses less digits than its factorization.

158977428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13248126 (or 13248124 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 158977428 is about 12608.6251431312. The cubic root of 158977428 is about 541.7245142585.

The spelling of 158977428 in words is "one hundred fifty-eight million, nine hundred seventy-seven thousand, four hundred twenty-eight".