78818976 has 144 divisors (see below), whose sum is σ = 238545216. Its totient is φ = 24634368.

The previous prime is 78818963. The next prime is 78818989. The reversal of 78818976 is 67981887.

It is an interprime number because it is at equal distance from previous prime (78818963) and next prime (78818989).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483471 + ... + 483633.

It is an arithmetic number, because the mean of its divisors is an integer number (1656564).

Almost surely, 2^78818976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78818976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119272608).

78818976 is an abundant number, since it is smaller than the sum of its proper divisors (159726240).

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

78818976 is a wasteful number, since it uses less digits than its factorization.

78818976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 264 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The square root of 78818976 is about 8878.0051813456. The cubic root of 78818976 is about 428.7560515031.

The spelling of 78818976 in words is "seventy-eight million, eight hundred eighteen thousand, nine hundred seventy-six".