21792675 has 24 divisors (see below), whose sum is σ = 36219904. Its totient is φ = 11561760.

The previous prime is 21792649. The next prime is 21792679. The reversal of 21792675 is 57629712.

It is not a de Polignac number, because 21792675 - 2⁵ = 21792643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21792679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16074 + ... + 17376.

Almost surely, 2^21792675 is an apocalyptic number.

21792675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21792675 is a deficient number, since it is larger than the sum of its proper divisors (14427229).

21792675 is a wasteful number, since it uses less digits than its factorization.

21792675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1534 counting only the distinct ones).

The product of its digits is 52920, while the sum is 39.

The square root of 21792675 is about 4668.2625247516. The cubic root of 21792675 is about 279.3209523141.

The spelling of 21792675 in words is "twenty-one million, seven hundred ninety-two thousand, six hundred seventy-five".