82791078 has 8 divisors (see below), whose sum is σ = 165582168. Its totient is φ = 27597024.

The previous prime is 82791073. The next prime is 82791097. The reversal of 82791078 is 87019728.

It is a sphenic number, since it is the product of 3 distinct primes.

82791078 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82791073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6899251 + ... + 6899262.

It is an arithmetic number, because the mean of its divisors is an integer number (20697771).

Almost surely, 2^82791078 is an apocalyptic number.

82791078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82791078 is a wasteful number, since it uses less digits than its factorization.

82791078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13798518.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 82791078 is about 9098.9602702726. The cubic root of 82791078 is about 435.8407626282.

The spelling of 82791078 in words is "eighty-two million, seven hundred ninety-one thousand, seventy-eight".