21825296 has 20 divisors (see below), whose sum is σ = 43187712. Its totient is φ = 10680096.

The previous prime is 21825289. The next prime is 21825337. The reversal of 21825296 is 69252812.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 13760 + ... + 15263.

Almost surely, 2^21825296 is an apocalyptic number.

It is an amenable number.

21825296 is a deficient number, since it is larger than the sum of its proper divisors (21362416).

21825296 is a wasteful number, since it uses less digits than its factorization.

21825296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29078 (or 29072 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 21825296 is about 4671.7551305692. The cubic root of 21825296 is about 279.4602527316.

The spelling of 21825296 in words is "twenty-one million, eight hundred twenty-five thousand, two hundred ninety-six".