82802813 has 4 divisors (see below), whose sum is σ = 83351328. Its totient is φ = 82254300.

The previous prime is 82802777. The next prime is 82802849. The reversal of 82802813 is 31820828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (82802777) and next prime (82802849).

It is a cyclic number.

It is not a de Polignac number, because 82802813 - 2⁶ = 82802749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82802813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82801813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274031 + ... + 274332.

It is an arithmetic number, because the mean of its divisors is an integer number (20837832).

Almost surely, 2^82802813 is an apocalyptic number.

It is an amenable number.

82802813 is a deficient number, since it is larger than the sum of its proper divisors (548515).

82802813 is a wasteful number, since it uses less digits than its factorization.

82802813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548514.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 82802813 is about 9099.6051013217. The cubic root of 82802813 is about 435.8613540165.

The spelling of 82802813 in words is "eighty-two million, eight hundred two thousand, eight hundred thirteen".