82399422 has 64 divisors (see below), whose sum is σ = 195148800. Its totient is φ = 22705920.

The previous prime is 82399403. The next prime is 82399433. The reversal of 82399422 is 22499328.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187479 + ... + 187917.

It is an arithmetic number, because the mean of its divisors is an integer number (3049200).

Almost surely, 2^82399422 is an apocalyptic number.

82399422 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 82399422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97574400).

82399422 is an abundant number, since it is smaller than the sum of its proper divisors (112749378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82399422 is a wasteful number, since it uses less digits than its factorization.

82399422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its digits is 62208, while the sum is 39.

The square root of 82399422 is about 9077.4127371184. The cubic root of 82399422 is about 435.1524053107.

The spelling of 82399422 in words is "eighty-two million, three hundred ninety-nine thousand, four hundred twenty-two".