158922 has 28 divisors (see below), whose sum is σ = 360690. Its totient is φ = 52488.

The previous prime is 158909. The next prime is 158923. The reversal of 158922 is 229851.

158922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 123201 + 35721 = 351^2 + 189^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158922.

It is not an unprimeable number, because it can be changed into a prime (158923) by changing a digit.

158922 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1404 + ... + 1512.

158922 is a Friedman number, since it can be written as 218*9^(5-2), using all its digits and the basic arithmetic operations.

2¹⁵⁸⁹²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180345).

158922 is an abundant number, since it is smaller than the sum of its proper divisors (201768).

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

158922 is an equidigital number, since it uses as much as digits as its factorization.

158922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 114 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 158922 is about 398.6502226263. The cubic root of 158922 is about 54.1661548933.

158922 divided by its sum of digits (27) gives a triangular number (5886 = T₁₀₈).

The spelling of 158922 in words is "one hundred fifty-eight thousand, nine hundred twenty-two".