21852922 has 48 divisors (see below), whose sum is σ = 43522920. Its totient is φ = 8128512.

The previous prime is 21852913. The next prime is 21852947. The reversal of 21852922 is 22925812.

It can be written as a sum of positive squares in 4 ways, for example, as 16088121 + 5764801 = 4011^2 + 2401^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21154 + ... + 22162.

Almost surely, 2^21852922 is an apocalyptic number.

21852922 is a deficient number, since it is larger than the sum of its proper divisors (21669998).

21852922 is a wasteful number, since it uses less digits than its factorization.

21852922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1048 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 21852922 is about 4674.7109001520. The cubic root of 21852922 is about 279.5781146505.

The spelling of 21852922 in words is "twenty-one million, eight hundred fifty-two thousand, nine hundred twenty-two".