82891316 has 12 divisors (see below), whose sum is σ = 145340832. Its totient is φ = 41365368.

The previous prime is 82891273. The next prime is 82891321. The reversal of 82891316 is 61319828.

It is a self number, because there is not a number n which added to its sum of digits gives 82891316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17720 + ... + 21903.

It is an arithmetic number, because the mean of its divisors is an integer number (12111736).

Almost surely, 2^82891316 is an apocalyptic number.

It is an amenable number.

82891316 is a deficient number, since it is larger than the sum of its proper divisors (62449516).

82891316 is a wasteful number, since it uses less digits than its factorization.

82891316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40150 (or 40148 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 82891316 is about 9104.4668157998. The cubic root of 82891316 is about 436.0165874788.

The spelling of 82891316 in words is "eighty-two million, eight hundred ninety-one thousand, three hundred sixteen".