21893828000 has 96 divisors (see below), whose sum is σ = 58683538368. Its totient is φ = 7961376000.

The previous prime is 21893827981. The next prime is 21893828009. The reversal of 21893828000 is 82839812.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21893828009) 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, 204794 + ... + 292793.

It is an arithmetic number, because the mean of its divisors is an integer number (611286858).

Almost surely, 2^21893828000 is an apocalyptic number.

21893828000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21893828000 is an abundant number, since it is smaller than the sum of its proper divisors (36789710368).

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

21893828000 is a wasteful number, since it uses less digits than its factorization.

21893828000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497623 (or 497605 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 21893828000 in words is "twenty-one billion, eight hundred ninety-three million, eight hundred twenty-eight thousand".