78802056 has 24 divisors (see below), whose sum is σ = 213422430. Its totient is φ = 26267328.

The previous prime is 78802051. The next prime is 78802067. The reversal of 78802056 is 65020887.

It can be written as a sum of positive squares in only one way, i.e., 71673156 + 7128900 = 8466^2 + 2670^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 78802056.

It is not an unprimeable number, because it can be changed into a prime (78802051) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 547165 + ... + 547308.

Almost surely, 2^78802056 is an apocalyptic number.

It is an amenable number.

78802056 is an abundant number, since it is smaller than the sum of its proper divisors (134620374).

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

78802056 is a wasteful number, since it uses less digits than its factorization.

78802056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094485 (or 1094478 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 78802056 is about 8877.0522134321. The cubic root of 78802056 is about 428.7253690797.

The spelling of 78802056 in words is "seventy-eight million, eight hundred two thousand, fifty-six".