21983052 has 96 divisors (see below), whose sum is σ = 64802304. Its totient is φ = 5644800.

The previous prime is 21983047. The next prime is 21983077. The reversal of 21983052 is 25038912.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44527 + ... + 45017.

It is an arithmetic number, because the mean of its divisors is an integer number (675024).

Almost surely, 2^21983052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21983052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32401152).

21983052 is an abundant number, since it is smaller than the sum of its proper divisors (42819252).

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

21983052 is a wasteful number, since it uses less digits than its factorization.

21983052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 21983052 is about 4688.6087488721. The cubic root of 21983052 is about 280.1319616074.

The spelling of 21983052 in words is "twenty-one million, nine hundred eighty-three thousand, fifty-two".