158857020 has 288 divisors, whose sum is σ = 587059200. Its totient is φ = 34715520.

The previous prime is 158857009. The next prime is 158857031. The reversal of 158857020 is 20758851.

158857020 is a `hidden beast` number, since 1 + 5 + 88 + 570 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (158857009) and next prime (158857031).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1913899 + ... + 1913981.

It is an arithmetic number, because the mean of its divisors is an integer number (2038400).

Almost surely, 2^158857020 is an apocalyptic number.

158857020 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 158857020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293529600).

158857020 is an abundant number, since it is smaller than the sum of its proper divisors (428202180).

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

158857020 is a wasteful number, since it uses less digits than its factorization.

158857020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 158857020 is about 12603.8494119852. The cubic root of 158857020 is about 541.5877140415.

The spelling of 158857020 in words is "one hundred fifty-eight million, eight hundred fifty-seven thousand, twenty".