21441652 has 12 divisors (see below), whose sum is σ = 39497920. Its totient is φ = 10156536.

The previous prime is 21441617. The next prime is 21441661. The reversal of 21441652 is 25614412.

It is a happy number.

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, 140988 + ... + 141139.

Almost surely, 2^21441652 is an apocalyptic number.

It is an amenable number.

21441652 is a deficient number, since it is larger than the sum of its proper divisors (18056268).

21441652 is a wasteful number, since it uses less digits than its factorization.

21441652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282150 (or 282148 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 21441652 is about 4630.5131465098. The cubic root of 21441652 is about 277.8131173290.

The spelling of 21441652 in words is "twenty-one million, four hundred forty-one thousand, six hundred fifty-two".