78716508 has 24 divisors (see below), whose sum is σ = 197800848. Its totient is φ = 24220416.

The previous prime is 78716497. The next prime is 78716513. The reversal of 78716508 is 80561787.

It is a self number, because there is not a number n which added to its sum of digits gives 78716508.

It is a congruent number.

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, 252141 + ... + 252452.

It is an arithmetic number, because the mean of its divisors is an integer number (8241702).

Almost surely, 2^78716508 is an apocalyptic number.

78716508 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

78716508 is an abundant number, since it is smaller than the sum of its proper divisors (119084340).

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

78716508 is a wasteful number, since it uses less digits than its factorization.

78716508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504613 (or 504611 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 78716508 is about 8872.2324135473. The cubic root of 78716508 is about 428.5701705995.

The spelling of 78716508 in words is "seventy-eight million, seven hundred sixteen thousand, five hundred eight".