21925852 has 36 divisors (see below), whose sum is σ = 43925560. Its totient is φ = 9517824.

The previous prime is 21925837. The next prime is 21925853. The reversal of 21925852 is 25852912.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21925853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14299 + ... + 15757.

Almost surely, 2^21925852 is an apocalyptic number.

It is an amenable number.

21925852 is an abundant number, since it is smaller than the sum of its proper divisors (21999708).

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

21925852 is a wasteful number, since it uses less digits than its factorization.

21925852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1491 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 21925852 is about 4682.5048852083. The cubic root of 21925852 is about 279.8887823602. Note that the first 3 decimals are identical.

The spelling of 21925852 in words is "twenty-one million, nine hundred twenty-five thousand, eight hundred fifty-two".