82928813 has 16 divisors (see below), whose sum is σ = 94041600. Its totient is φ = 72446400.

The previous prime is 82928809. The next prime is 82928827. The reversal of 82928813 is 31882928.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82928813 - 2² = 82928809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82928843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52763 + ... + 54311.

It is an arithmetic number, because the mean of its divisors is an integer number (5877600).

Almost surely, 2^82928813 is an apocalyptic number.

It is an amenable number.

82928813 is a deficient number, since it is larger than the sum of its proper divisors (11112787).

82928813 is a wasteful number, since it uses less digits than its factorization.

82928813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its digits is 55296, while the sum is 41.

The square root of 82928813 is about 9106.5258468858. The cubic root of 82928813 is about 436.0823235539.

The spelling of 82928813 in words is "eighty-two million, nine hundred twenty-eight thousand, eight hundred thirteen".