21904583260 has 48 divisors (see below), whose sum is σ = 54266849280. Its totient is φ = 7267878720.

The previous prime is 21904583251. The next prime is 21904583279. The reversal of 21904583260 is 6238540912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2519230 + ... + 2527909.

It is an arithmetic number, because the mean of its divisors is an integer number (1130559360).

Almost surely, 2^21904583260 is an apocalyptic number.

21904583260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21904583260 is an abundant number, since it is smaller than the sum of its proper divisors (32362266020).

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

21904583260 is a wasteful number, since it uses less digits than its factorization.

21904583260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047186 (or 5047184 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 21904583260 in words is "twenty-one billion, nine hundred four million, five hundred eighty-three thousand, two hundred sixty".