158790132 has 120 divisors (see below), whose sum is σ = 444939264. Its totient is φ = 49206528.

The previous prime is 158790131. The next prime is 158790157. The reversal of 158790132 is 231097851.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158790131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 699403 + ... + 699629.

Almost surely, 2^158790132 is an apocalyptic number.

158790132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158790132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222469632).

158790132 is an abundant number, since it is smaller than the sum of its proper divisors (286149132).

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

158790132 is a wasteful number, since it uses less digits than its factorization.

158790132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 158790132 is about 12601.1956575557. The cubic root of 158790132 is about 541.5116901122.

It can be divided in two parts, 1587 and 90132, that added together give a palindrome (91719).

The spelling of 158790132 in words is "one hundred fifty-eight million, seven hundred ninety thousand, one hundred thirty-two".