21792192 has 28 divisors (see below), whose sum is σ = 57659016. Its totient is φ = 7264000.

The previous prime is 21792191. The next prime is 21792193. The reversal of 21792192 is 29129712.

It is an interprime number because it is at equal distance from previous prime (21792191) and next prime (21792193).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21792191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56559 + ... + 56942.

Almost surely, 2^21792192 is an apocalyptic number.

It is an amenable number.

21792192 is an abundant number, since it is smaller than the sum of its proper divisors (35866824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21792192 is a wasteful number, since it uses less digits than its factorization.

21792192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113516 (or 113506 counting only the distinct ones).

The product of its digits is 4536, while the sum is 33.

The square root of 21792192 is about 4668.2107921558. The cubic root of 21792192 is about 279.3188887305.

It can be divided in two parts, 2179 and 2192, that added together give a triangular number (4371 = T₉₃).

The spelling of 21792192 in words is "twenty-one million, seven hundred ninety-two thousand, one hundred ninety-two".