21895852 has 12 divisors (see below), whose sum is σ = 41801256. Its totient is φ = 9952640.

The previous prime is 21895829. The next prime is 21895859. The reversal of 21895852 is 25859812.

It is not an unprimeable number, because it can be changed into a prime (21895859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248773 + ... + 248860.

It is an arithmetic number, because the mean of its divisors is an integer number (3483438).

Almost surely, 2^21895852 is an apocalyptic number.

21895852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21895852 is a deficient number, since it is larger than the sum of its proper divisors (19905404).

21895852 is a wasteful number, since it uses less digits than its factorization.

21895852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497648 (or 497646 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 21895852 is about 4679.3003750561. The cubic root of 21895852 is about 279.7610716870.

The spelling of 21895852 in words is "twenty-one million, eight hundred ninety-five thousand, eight hundred fifty-two".