78572616 has 32 divisors (see below), whose sum is σ = 197460960. Its totient is φ = 26053632.

The previous prime is 78572609. The next prime is 78572639. The reversal of 78572616 is 61627587.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3850 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (6170655).

Almost surely, 2^78572616 is an apocalyptic number.

It is an amenable number.

78572616 is an abundant number, since it is smaller than the sum of its proper divisors (118888344).

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

78572616 is a wasteful number, since it uses less digits than its factorization.

78572616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17165 (or 17161 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 78572616 is about 8864.1195840309. The cubic root of 78572616 is about 428.3088724527.

The spelling of 78572616 in words is "seventy-eight million, five hundred seventy-two thousand, six hundred sixteen".