82638243 has 6 divisors (see below), whose sum is σ = 119366364. Its totient is φ = 55092156.

The previous prime is 82638233. The next prime is 82638271. The reversal of 82638243 is 34283628.

It is not a de Polignac number, because 82638243 - 2⁵ = 82638211 is a prime.

It is a super-2 number, since 2×82638243² = 13658158412254098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82638198 and 82638207.

It is not an unprimeable number, because it can be changed into a prime (82638233) 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, 4591005 + ... + 4591022.

It is an arithmetic number, because the mean of its divisors is an integer number (19894394).

Almost surely, 2^82638243 is an apocalyptic number.

82638243 is a deficient number, since it is larger than the sum of its proper divisors (36728121).

82638243 is a wasteful number, since it uses less digits than its factorization.

82638243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9182033 (or 9182030 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 82638243 is about 9090.5579036713. The cubic root of 82638243 is about 435.5724053938.

The spelling of 82638243 in words is "eighty-two million, six hundred thirty-eight thousand, two hundred forty-three".