158989572 has 36 divisors (see below), whose sum is σ = 459303936. Its totient is φ = 45425520.

The previous prime is 158989543. The next prime is 158989577. The reversal of 158989572 is 275989851.

158989572 is a `hidden beast` number, since 1 + 589 + 8 + 9 + 57 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (158989577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315204 + ... + 315707.

Almost surely, 2^158989572 is an apocalyptic number.

158989572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158989572 is an abundant number, since it is smaller than the sum of its proper divisors (300314364).

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

158989572 is a wasteful number, since it uses less digits than its factorization.

158989572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630928 (or 630923 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 54.

The square root of 158989572 is about 12609.1067090417. The cubic root of 158989572 is about 541.7383076946.

The spelling of 158989572 in words is "one hundred fifty-eight million, nine hundred eighty-nine thousand, five hundred seventy-two".