78513044 has 24 divisors (see below), whose sum is σ = 139722240. Its totient is φ = 38596896.

The previous prime is 78513023. The next prime is 78513059. The reversal of 78513044 is 44031587.

It is a self number, because there is not a number n which added to its sum of digits gives 78513044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115634 + ... + 116310.

It is an arithmetic number, because the mean of its divisors is an integer number (5821760).

Almost surely, 2^78513044 is an apocalyptic number.

It is an amenable number.

78513044 is a deficient number, since it is larger than the sum of its proper divisors (61209196).

78513044 is a wasteful number, since it uses less digits than its factorization.

78513044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 78513044 is about 8860.7586582640. The cubic root of 78513044 is about 428.2006003492.

The spelling of 78513044 in words is "seventy-eight million, five hundred thirteen thousand, forty-four".