82492813 has 16 divisors (see below), whose sum is σ = 93889600. Its totient is φ = 71850240.

The previous prime is 82492811. The next prime is 82492831. The reversal of 82492813 is 31829428.

It is a cyclic number.

It is not a de Polignac number, because 82492813 - 2¹ = 82492811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82492811) 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, 81253 + ... + 82261.

It is an arithmetic number, because the mean of its divisors is an integer number (5868100).

Almost surely, 2^82492813 is an apocalyptic number.

It is an amenable number.

82492813 is a deficient number, since it is larger than the sum of its proper divisors (11396787).

82492813 is a wasteful number, since it uses less digits than its factorization.

82492813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 27648, while the sum is 37.

The square root of 82492813 is about 9082.5554223467. Note that the first 3 decimals coincide. The cubic root of 82492813 is about 435.3167429298.

The spelling of 82492813 in words is "eighty-two million, four hundred ninety-two thousand, eight hundred thirteen".