82474392 has 128 divisors (see below), whose sum is σ = 276917760. Its totient is φ = 19768320.

The previous prime is 82474391. The next prime is 82474397. The reversal of 82474392 is 29347428.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 82474392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82474391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22308 + ... + 25740.

It is an arithmetic number, because the mean of its divisors is an integer number (2163420).

Almost surely, 2^82474392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82474392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138458880).

82474392 is an abundant number, since it is smaller than the sum of its proper divisors (194443368).

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

82474392 is a wasteful number, since it uses less digits than its factorization.

82474392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3469 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 82474392 is about 9081.5412788799. The cubic root of 82474392 is about 435.2843378172.

It can be divided in two parts, 82 and 474392, that added together give a palindrome (474474).

The spelling of 82474392 in words is "eighty-two million, four hundred seventy-four thousand, three hundred ninety-two".