21933052 has 12 divisors (see below), whose sum is σ = 38638096. Its totient is φ = 10893600.

The previous prime is 21933047. The next prime is 21933061. The reversal of 21933052 is 25033912.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17553 + ... + 18760.

Almost surely, 2^21933052 is an apocalyptic number.

It is an amenable number.

21933052 is a deficient number, since it is larger than the sum of its proper divisors (16705044).

21933052 is a wasteful number, since it uses less digits than its factorization.

21933052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36468 (or 36466 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 21933052 is about 4683.2736413752. The cubic root of 21933052 is about 279.9194155854.

Adding to 21933052 its reverse (25033912), we get a palindrome (46966964).

The spelling of 21933052 in words is "twenty-one million, nine hundred thirty-three thousand, fifty-two".