78802976 has 72 divisors (see below), whose sum is σ = 186803820. Its totient is φ = 32589312.

The previous prime is 78802963. The next prime is 78802979. The reversal of 78802976 is 67920887.

It can be written as a sum of positive squares in 2 ways, for example, as 78783376 + 19600 = 8876^2 + 140^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78802976.

It is not an unprimeable number, because it can be changed into a prime (78802979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44606 + ... + 46338.

Almost surely, 2^78802976 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 78802976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93401910).

78802976 is an abundant number, since it is smaller than the sum of its proper divisors (108000844).

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

78802976 is a wasteful number, since it uses less digits than its factorization.

78802976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 78802976 is about 8877.1040322844. The cubic root of 78802976 is about 428.7270375041.

The spelling of 78802976 in words is "seventy-eight million, eight hundred two thousand, nine hundred seventy-six".