20882880 has 112 divisors (see below), whose sum is σ = 73700640. Its totient is φ = 5566464.

The previous prime is 20882857. The next prime is 20882887. The reversal of 20882880 is 8828802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20882887) 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, 7432 + ... + 9848.

Almost surely, 2^20882880 is an apocalyptic number.

20882880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20882880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36850320).

20882880 is an abundant number, since it is smaller than the sum of its proper divisors (52817760).

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

20882880 is a wasteful number, since it uses less digits than its factorization.

20882880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 20882880 is about 4569.7789880912. The cubic root of 20882880 is about 275.3785640304.

The spelling of 20882880 in words is "twenty million, eight hundred eighty-two thousand, eight hundred eighty".