21824996 has 24 divisors (see below), whose sum is σ = 40424160. Its totient is φ = 10281600.

The previous prime is 21824987. The next prime is 21825017. The reversal of 21824996 is 69942812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15356 + ... + 16716.

It is an arithmetic number, because the mean of its divisors is an integer number (1684340).

Almost surely, 2^21824996 is an apocalyptic number.

It is an amenable number.

21824996 is a deficient number, since it is larger than the sum of its proper divisors (18599164).

21824996 is a wasteful number, since it uses less digits than its factorization.

21824996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595 (or 1593 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 21824996 is about 4671.7230226117. The cubic root of 21824996 is about 279.4589722837.

The spelling of 21824996 in words is "twenty-one million, eight hundred twenty-four thousand, nine hundred ninety-six".