82794138 has 16 divisors (see below), whose sum is σ = 189243840. Its totient is φ = 23655456.

The previous prime is 82794113. The next prime is 82794143. The reversal of 82794138 is 83149728.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1971289 = 82794138 / (8 + 2 + 7 + 9 + 4 + 1 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 82794138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985603 + ... + 985686.

It is an arithmetic number, because the mean of its divisors is an integer number (11827740).

Almost surely, 2^82794138 is an apocalyptic number.

82794138 is an abundant number, since it is smaller than the sum of its proper divisors (106449702).

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

82794138 is a wasteful number, since it uses less digits than its factorization.

82794138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971301.

The product of its digits is 96768, while the sum is 42.

The square root of 82794138 is about 9099.1284197993. The cubic root of 82794138 is about 435.8461321935.

The spelling of 82794138 in words is "eighty-two million, seven hundred ninety-four thousand, one hundred thirty-eight".