21924983 has 6 divisors (see below), whose sum is σ = 22424304. Its totient is φ = 21427076.

The previous prime is 21924971. The next prime is 21924997. The reversal of 21924983 is 38942912.

It is not a de Polignac number, because 21924983 - 2⁶ = 21924919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21924913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31760 + ... + 32442.

It is an arithmetic number, because the mean of its divisors is an integer number (3737384).

Almost surely, 2^21924983 is an apocalyptic number.

21924983 is a deficient number, since it is larger than the sum of its proper divisors (499321).

21924983 is an frugal number, since it uses more digits than its factorization.

21924983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 730 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 21924983 is about 4682.4120920739. The cubic root of 21924983 is about 279.8850846465.

The spelling of 21924983 in words is "twenty-one million, nine hundred twenty-four thousand, nine hundred eighty-three".