158857420 has 24 divisors (see below), whose sum is σ = 339072048. Its totient is φ = 62500800.

The previous prime is 158857409. The next prime is 158857427. The reversal of 158857420 is 24758851.

It is not an unprimeable number, because it can be changed into a prime (158857427) 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 7 ways as a sum of consecutive naturals, for example, 63886 + ... + 66325.

It is an arithmetic number, because the mean of its divisors is an integer number (14128002).

Almost surely, 2^158857420 is an apocalyptic number.

158857420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158857420 is an abundant number, since it is smaller than the sum of its proper divisors (180214628).

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

158857420 is a wasteful number, since it uses less digits than its factorization.

158857420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130281 (or 130279 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 158857420 is about 12603.8652801432. The cubic root of 158857420 is about 541.5881686115.

The spelling of 158857420 in words is "one hundred fifty-eight million, eight hundred fifty-seven thousand, four hundred twenty".