20832256 has 28 divisors (see below), whose sum is σ = 41678352. Its totient is φ = 10412032.

The previous prime is 20832239. The next prime is 20832263. The reversal of 20832256 is 65223802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6921 + ... + 9463.

Almost surely, 2^20832256 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 20832256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20839176).

20832256 is an abundant number, since it is smaller than the sum of its proper divisors (20846096).

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

20832256 is an frugal number, since it uses more digits than its factorization.

20832256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20832256 is about 4564.2366283969. The cubic root of 20832256 is about 275.1558609577.

The spelling of 20832256 in words is "twenty million, eight hundred thirty-two thousand, two hundred fifty-six".