78539996 has 12 divisors (see below), whose sum is σ = 144679080. Its totient is φ = 37203120.

The previous prime is 78539959. The next prime is 78540031. The reversal of 78539996 is 69993587.

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, 516635 + ... + 516786.

It is an arithmetic number, because the mean of its divisors is an integer number (12056590).

Almost surely, 2^78539996 is an apocalyptic number.

78539996 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78539996 is a deficient number, since it is larger than the sum of its proper divisors (66139084).

78539996 is a wasteful number, since it uses less digits than its factorization.

78539996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033444 (or 1033442 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 56.

The square root of 78539996 is about 8862.2793907662. The cubic root of 78539996 is about 428.2495923878.

The spelling of 78539996 in words is "seventy-eight million, five hundred thirty-nine thousand, nine hundred ninety-six".