158878287 has 16 divisors (see below), whose sum is σ = 235572480. Its totient is φ = 105830136.

The previous prime is 158878267. The next prime is 158878301. The reversal of 158878287 is 782878851.

158878287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-158878287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158878207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53278 + ... + 56180.

It is an arithmetic number, because the mean of its divisors is an integer number (14723280).

Almost surely, 2^158878287 is an apocalyptic number.

158878287 is a deficient number, since it is larger than the sum of its proper divisors (76694193).

158878287 is a wasteful number, since it uses less digits than its factorization.

158878287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939 (or 4933 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 54.

The square root of 158878287 is about 12604.6930545730. The cubic root of 158878287 is about 541.6118813335.

The spelling of 158878287 in words is "one hundred fifty-eight million, eight hundred seventy-eight thousand, two hundred eighty-seven".