21614452 has 12 divisors (see below), whose sum is σ = 38058496. Its totient is φ = 10740600.

The previous prime is 21614441. The next prime is 21614491. The reversal of 21614452 is 25441612.

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, 15924 + ... + 17227.

Almost surely, 2^21614452 is an apocalyptic number.

It is an amenable number.

21614452 is a deficient number, since it is larger than the sum of its proper divisors (16444044).

21614452 is a wasteful number, since it uses less digits than its factorization.

21614452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33318 (or 33316 counting only the distinct ones).

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

The square root of 21614452 is about 4649.1345431166. The cubic root of 21614452 is about 278.5574275046.

The spelling of 21614452 in words is "twenty-one million, six hundred fourteen thousand, four hundred fifty-two".