158772 has 24 divisors (see below), whose sum is σ = 376992. Its totient is φ = 52000.

The previous prime is 158771. The next prime is 158777. The reversal of 158772 is 277851.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1147 + ... + 1277.

It is an arithmetic number, because the mean of its divisors is an integer number (15708).

2¹⁵⁸⁷⁷² is an apocalyptic number.

158772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158772 is an abundant number, since it is smaller than the sum of its proper divisors (218220).

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

158772 is a wasteful number, since it uses less digits than its factorization.

158772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 237 counting only the distinct ones).

The product of its digits is 3920, while the sum is 30.

The square root of 158772 is about 398.4620433617. The cubic root of 158772 is about 54.1491077866.

The spelling of 158772 in words is "one hundred fifty-eight thousand, seven hundred seventy-two".