82239292 has 12 divisors (see below), whose sum is σ = 144297216. Its totient is φ = 41011520.

The previous prime is 82239259. The next prime is 82239299. The reversal of 82239292 is 29293228.

82239292 = 259² + 260² + ... + 641².

It is a super-2 number, since 2×82239292² = 13526602297322528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82239299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25309 + ... + 28372.

It is an arithmetic number, because the mean of its divisors is an integer number (12024768).

Almost surely, 2^82239292 is an apocalyptic number.

It is an amenable number.

82239292 is a deficient number, since it is larger than the sum of its proper divisors (62057924).

82239292 is a wasteful number, since it uses less digits than its factorization.

82239292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54068 (or 54066 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 82239292 is about 9068.5882032431. The cubic root of 82239292 is about 434.8703396535.

The spelling of 82239292 in words is "eighty-two million, two hundred thirty-nine thousand, two hundred ninety-two".