21792452 has 24 divisors (see below), whose sum is σ = 41809152. Its totient is φ = 9856800.

The previous prime is 21792439. The next prime is 21792469. The reversal of 21792452 is 25429712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8702 + ... + 10922.

It is an arithmetic number, because the mean of its divisors is an integer number (1742048).

Almost surely, 2^21792452 is an apocalyptic number.

21792452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21792452 is a deficient number, since it is larger than the sum of its proper divisors (20016700).

21792452 is a wasteful number, since it uses less digits than its factorization.

21792452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459 (or 2457 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 21792452 is about 4668.2386400012. The cubic root of 21792452 is about 279.3199995661.

The spelling of 21792452 in words is "twenty-one million, seven hundred ninety-two thousand, four hundred fifty-two".