79832778 has 16 divisors (see below), whose sum is σ = 162049440. Its totient is φ = 26213616.

The previous prime is 79832761. The next prime is 79832783. The reversal of 79832778 is 87723897.

It is a self number, because there is not a number n which added to its sum of digits gives 79832778.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 98893 + ... + 99696.

It is an arithmetic number, because the mean of its divisors is an integer number (10128090).

Almost surely, 2^79832778 is an apocalyptic number.

79832778 is an abundant number, since it is smaller than the sum of its proper divisors (82216662).

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

79832778 is a wasteful number, since it uses less digits than its factorization.

79832778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198661.

The product of its digits is 1185408, while the sum is 51.

The square root of 79832778 is about 8934.9190259341. The cubic root of 79832778 is about 430.5865045147.

The spelling of 79832778 in words is "seventy-nine million, eight hundred thirty-two thousand, seven hundred seventy-eight".