82704412 has 48 divisors (see below), whose sum is σ = 173859840. Its totient is φ = 33656832.

The previous prime is 82704383. The next prime is 82704449. The reversal of 82704412 is 21440728.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107164 + ... + 107932.

It is an arithmetic number, because the mean of its divisors is an integer number (3622080).

Almost surely, 2^82704412 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 82704412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86929920).

82704412 is an abundant number, since it is smaller than the sum of its proper divisors (91155428).

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

82704412 is a wasteful number, since it uses less digits than its factorization.

82704412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 82704412 is about 9094.1966110262. The cubic root of 82704412 is about 435.6886296356.

The spelling of 82704412 in words is "eighty-two million, seven hundred four thousand, four hundred twelve".