21924466 has 8 divisors (see below), whose sum is σ = 33586560. Its totient is φ = 10728948.

The previous prime is 21924449. The next prime is 21924473. The reversal of 21924466 is 66442912.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 116526 + ... + 116713.

It is an arithmetic number, because the mean of its divisors is an integer number (4198320).

Almost surely, 2^21924466 is an apocalyptic number.

21924466 is a deficient number, since it is larger than the sum of its proper divisors (11662094).

21924466 is a wasteful number, since it uses less digits than its factorization.

21924466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233288.

The product of its digits is 20736, while the sum is 34.

The square root of 21924466 is about 4682.3568851594. The cubic root of 21924466 is about 279.8828846946.

The spelling of 21924466 in words is "twenty-one million, nine hundred twenty-four thousand, four hundred sixty-six".