82238513 has 6 divisors (see below), whose sum is σ = 95665266. Its totient is φ = 70490112.

The previous prime is 82238509. The next prime is 82238539. The reversal of 82238513 is 31583228.

It can be written as a sum of positive squares in only one way, i.e., 76440049 + 5798464 = 8743^2 + 2408^2 .

It is not a de Polignac number, because 82238513 - 2² = 82238509 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 82238513.

It is not an unprimeable number, because it can be changed into a prime (82238713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 839120 + ... + 839217.

It is an arithmetic number, because the mean of its divisors is an integer number (15944211).

Almost surely, 2^82238513 is an apocalyptic number.

It is an amenable number.

82238513 is a deficient number, since it is larger than the sum of its proper divisors (13426753).

82238513 is a wasteful number, since it uses less digits than its factorization.

82238513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678351 (or 1678344 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 82238513 is about 9068.5452526852. The cubic root of 82238513 is about 434.8689665666.

The spelling of 82238513 in words is "eighty-two million, two hundred thirty-eight thousand, five hundred thirteen".