82001856 has 56 divisors (see below), whose sum is σ = 217992960. Its totient is φ = 27204352.

The previous prime is 82001809. The next prime is 82001861. The reversal of 82001856 is 65810028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44995 + ... + 46781.

Almost surely, 2^82001856 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 82001856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108996480).

82001856 is an abundant number, since it is smaller than the sum of its proper divisors (135991104).

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

82001856 is a wasteful number, since it uses less digits than its factorization.

82001856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2031 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 82001856 is about 9055.4876180137. The cubic root of 82001856 is about 434.4514263398.

The spelling of 82001856 in words is "eighty-two million, one thousand, eight hundred fifty-six".