78993582 has 8 divisors (see below), whose sum is σ = 157987176. Its totient is φ = 26331192.

The previous prime is 78993571. The next prime is 78993613. The reversal of 78993582 is 28539987.

It is a sphenic number, since it is the product of 3 distinct primes.

78993582 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6582793 + ... + 6582804.

It is an arithmetic number, because the mean of its divisors is an integer number (19748397).

Almost surely, 2^78993582 is an apocalyptic number.

78993582 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78993582 is a wasteful number, since it uses less digits than its factorization.

78993582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13165602.

The product of its digits is 1088640, while the sum is 51.

The square root of 78993582 is about 8887.8333692751. The cubic root of 78993582 is about 429.0724227196.

The spelling of 78993582 in words is "seventy-eight million, nine hundred ninety-three thousand, five hundred eighty-two".