21883224 has 32 divisors (see below), whose sum is σ = 59682240. Its totient is φ = 6631200.

The previous prime is 21883207. The next prime is 21883249. The reversal of 21883224 is 42238812.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21883191 and 21883200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41182 + ... + 41709.

It is an arithmetic number, because the mean of its divisors is an integer number (1865070).

Almost surely, 2^21883224 is an apocalyptic number.

21883224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21883224 is an abundant number, since it is smaller than the sum of its proper divisors (37799016).

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

21883224 is a wasteful number, since it uses less digits than its factorization.

21883224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82911 (or 82907 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 21883224 is about 4677.9508334312. The cubic root of 21883224 is about 279.7072791210.

The spelling of 21883224 in words is "twenty-one million, eight hundred eighty-three thousand, two hundred twenty-four".