82843904 has 144 divisors (see below), whose sum is σ = 203288064. Its totient is φ = 33177600.

The previous prime is 82843889. The next prime is 82843909. The reversal of 82843904 is 40934828.

It is a super-2 number, since 2×82843904² = 13726224859922432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82843909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134812 + ... + 1134884.

Almost surely, 2^82843904 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 82843904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101644032).

82843904 is an abundant number, since it is smaller than the sum of its proper divisors (120444160).

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

82843904 is a wasteful number, since it uses less digits than its factorization.

82843904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 82843904 is about 9101.8626665095. The cubic root of 82843904 is about 435.9334410083.

The spelling of 82843904 in words is "eighty-two million, eight hundred forty-three thousand, nine hundred four".