78591152 has 20 divisors (see below), whose sum is σ = 153073536. Its totient is φ = 39088320.

The previous prime is 78591113. The next prime is 78591157. The reversal of 78591152 is 25119587.

It is not an unprimeable number, because it can be changed into a prime (78591157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9803 + ... + 15914.

Almost surely, 2^78591152 is an apocalyptic number.

It is an amenable number.

78591152 is a deficient number, since it is larger than the sum of its proper divisors (74482384).

78591152 is a wasteful number, since it uses less digits than its factorization.

78591152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25916 (or 25910 counting only the distinct ones).

The product of its digits is 25200, while the sum is 38.

The square root of 78591152 is about 8865.1650858853. The cubic root of 78591152 is about 428.3425504669.

The spelling of 78591152 in words is "seventy-eight million, five hundred ninety-one thousand, one hundred fifty-two".