20202880 has 32 divisors (see below), whose sum is σ = 48299040. Its totient is φ = 8080896.

The previous prime is 20202877. The next prime is 20202881. The reversal of 20202880 is 8820202.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15144 + ... + 16423.

It is an arithmetic number, because the mean of its divisors is an integer number (1509345).

Almost surely, 2^20202880 is an apocalyptic number.

20202880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202880 is an abundant number, since it is smaller than the sum of its proper divisors (28096160).

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

20202880 is an equidigital number, since it uses as much as digits as its factorization.

20202880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31586 (or 31574 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 20202880 is about 4494.7613952244. The cubic root of 20202880 is about 272.3565106025.

It can be divided in two parts, 2020 and 2880, that added together give a square (4900 = 70²).

The spelling of 20202880 in words is "twenty million, two hundred two thousand, eight hundred eighty".