21792298 has 8 divisors (see below), whose sum is σ = 35660160. Its totient is φ = 9905580.

The previous prime is 21792289. The next prime is 21792301. The reversal of 21792298 is 89229712.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21792298.

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, 495258 + ... + 495301.

It is an arithmetic number, because the mean of its divisors is an integer number (4457520).

Almost surely, 2^21792298 is an apocalyptic number.

21792298 is a deficient number, since it is larger than the sum of its proper divisors (13867862).

21792298 is a wasteful number, since it uses less digits than its factorization.

21792298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990572.

The product of its digits is 36288, while the sum is 40.

The square root of 21792298 is about 4668.2221455282. Note that the first 3 decimals coincide. The cubic root of 21792298 is about 279.3193416107.

The spelling of 21792298 in words is "twenty-one million, seven hundred ninety-two thousand, two hundred ninety-eight".