158857144 has 24 divisors (see below), whose sum is σ = 307790280. Its totient is φ = 76862640.

The previous prime is 158857121. The next prime is 158857177. The reversal of 158857144 is 441758851.

It is a self number, because there is not a number n which added to its sum of digits gives 158857144.

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 5 ways as a sum of consecutive naturals, for example, 2644 + ... + 18019.

It is an arithmetic number, because the mean of its divisors is an integer number (12824595).

Almost surely, 2^158857144 is an apocalyptic number.

It is an amenable number.

158857144 is a deficient number, since it is larger than the sum of its proper divisors (148933136).

158857144 is a wasteful number, since it uses less digits than its factorization.

158857144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20731 (or 20696 counting only the distinct ones).

The product of its digits is 179200, while the sum is 43.

The square root of 158857144 is about 12603.8543311163. The cubic root of 158857144 is about 541.5878549583.

The spelling of 158857144 in words is "one hundred fifty-eight million, eight hundred fifty-seven thousand, one hundred forty-four".