158761920 has 112 divisors (see below), whose sum is σ = 512795520. Its totient is φ = 41604096.

The previous prime is 158761919. The next prime is 158761973. The reversal of 158761920 is 29167851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55239 + ... + 58041.

Almost surely, 2^158761920 is an apocalyptic number.

158761920 is a gapful number since it is divisible by the number (10) 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 158761920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256397760).

158761920 is an abundant number, since it is smaller than the sum of its proper divisors (354033600).

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

158761920 is a wasteful number, since it uses less digits than its factorization.

158761920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882 (or 2872 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 158761920 is about 12600.0761902458. The cubic root of 158761920 is about 541.4796183614.

The spelling of 158761920 in words is "one hundred fifty-eight million, seven hundred sixty-one thousand, nine hundred twenty".