82937778 has 32 divisors (see below), whose sum is σ = 206807040. Its totient is φ = 21542160.

The previous prime is 82937749. The next prime is 82937783. The reversal of 82937778 is 87773928.

It is a self number, because there is not a number n which added to its sum of digits gives 82937778.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89298 + ... + 90221.

It is an arithmetic number, because the mean of its divisors is an integer number (6462720).

Almost surely, 2^82937778 is an apocalyptic number.

82937778 is an abundant number, since it is smaller than the sum of its proper divisors (123869262).

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

82937778 is a wasteful number, since it uses less digits than its factorization.

82937778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179542.

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

The square root of 82937778 is about 9107.0180630105. The cubic root of 82937778 is about 436.0980371803.

The spelling of 82937778 in words is "eighty-two million, nine hundred thirty-seven thousand, seven hundred seventy-eight".