82269881 has 4 divisors (see below), whose sum is σ = 84020352. Its totient is φ = 80519412.

The previous prime is 82269841. The next prime is 82269899. The reversal of 82269881 is 18896228.

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 a cyclic number.

It is not a de Polignac number, because 82269881 - 2²⁶ = 15161017 is a prime.

It is a super-2 number, since 2×82269881² = 13536666639508322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82269841) 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, 875165 + ... + 875258.

It is an arithmetic number, because the mean of its divisors is an integer number (21005088).

Almost surely, 2^82269881 is an apocalyptic number.

It is an amenable number.

82269881 is a deficient number, since it is larger than the sum of its proper divisors (1750471).

82269881 is a wasteful number, since it uses less digits than its factorization.

82269881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750470.

The product of its digits is 110592, while the sum is 44.

The square root of 82269881 is about 9070.2745823928. The cubic root of 82269881 is about 434.9242498124.

The spelling of 82269881 in words is "eighty-two million, two hundred sixty-nine thousand, eight hundred eighty-one".