158520020 has 24 divisors (see below), whose sum is σ = 338536800. Its totient is φ = 62332832.

The previous prime is 158519989. The next prime is 158520023. The reversal of 158520020 is 20025851.

158520020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158520023) 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, 65990 + ... + 68349.

It is an arithmetic number, because the mean of its divisors is an integer number (14105700).

Almost surely, 2^158520020 is an apocalyptic number.

158520020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158520020 is an abundant number, since it is smaller than the sum of its proper divisors (180016780).

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

158520020 is a wasteful number, since it uses less digits than its factorization.

158520020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134407 (or 134405 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 158520020 is about 12590.4733826810. The cubic root of 158520020 is about 541.2044673653.

Adding to 158520020 its reverse (20025851), we get a palindrome (178545871).

The spelling of 158520020 in words is "one hundred fifty-eight million, five hundred twenty thousand, twenty".