82538289 has 12 divisors (see below), whose sum is σ = 122130372. Its totient is φ = 53683200.

The previous prime is 82538279. The next prime is 82538293. The reversal of 82538289 is 98283528.

It can be written as a sum of positive squares in 2 ways, for example, as 12531600 + 70006689 = 3540^2 + 8367^2 .

It is not a de Polignac number, because 82538289 - 2⁴ = 82538273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82538279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111472 + ... + 112209.

It is an arithmetic number, because the mean of its divisors is an integer number (10177531).

Almost surely, 2^82538289 is an apocalyptic number.

It is an amenable number.

82538289 is a deficient number, since it is larger than the sum of its proper divisors (39592083).

82538289 is a wasteful number, since it uses less digits than its factorization.

82538289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223728 (or 223725 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 82538289 is about 9085.0585578740. The cubic root of 82538289 is about 435.3967209176.

The spelling of 82538289 in words is "eighty-two million, five hundred thirty-eight thousand, two hundred eighty-nine".