21792296 has 16 divisors (see below), whose sum is σ = 40910100. Its totient is φ = 10882944.

The previous prime is 21792289. The next prime is 21792301. The reversal of 21792296 is 69229712.

It can be written as a sum of positive squares in 2 ways, for example, as 20376196 + 1416100 = 4514^2 + 1190^2 .

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, 12026 + ... + 13718.

Almost surely, 2^21792296 is an apocalyptic number.

It is an amenable number.

21792296 is a deficient number, since it is larger than the sum of its proper divisors (19117804).

21792296 is a wasteful number, since it uses less digits than its factorization.

21792296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308 (or 3304 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 21792296 is about 4668.2219313139. The cubic root of 21792296 is about 279.3193330658.

The spelling of 21792296 in words is "twenty-one million, seven hundred ninety-two thousand, two hundred ninety-six".