78870158 has 16 divisors (see below), whose sum is σ = 120140496. Its totient is φ = 38828160.

The previous prime is 78870073. The next prime is 78870167. The reversal of 78870158 is 85107887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35768 + ... + 37908.

It is an arithmetic number, because the mean of its divisors is an integer number (7508781).

Almost surely, 2^78870158 is an apocalyptic number.

78870158 is a deficient number, since it is larger than the sum of its proper divisors (41270338).

78870158 is a wasteful number, since it uses less digits than its factorization.

78870158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419.

The product of its (nonzero) digits is 125440, while the sum is 44.

The square root of 78870158 is about 8880.8872304517. The cubic root of 78870158 is about 428.8488372977.

The spelling of 78870158 in words is "seventy-eight million, eight hundred seventy thousand, one hundred fifty-eight".