21793032 has 24 divisors (see below), whose sum is σ = 59022990. Its totient is φ = 7264320.

The previous prime is 21793021. The next prime is 21793033. The reversal of 21793032 is 23039712.

It can be written as a sum of positive squares in only one way, i.e., 14791716 + 7001316 = 3846^2 + 2646^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 21792987 and 21793005.

It is not an unprimeable number, because it can be changed into a prime (21793033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151269 + ... + 151412.

Almost surely, 2^21793032 is an apocalyptic number.

It is an amenable number.

21793032 is an abundant number, since it is smaller than the sum of its proper divisors (37229958).

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

21793032 is a wasteful number, since it uses less digits than its factorization.

21793032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302693 (or 302686 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 21793032 is about 4668.3007615191. The cubic root of 21793032 is about 279.3224775519.

The spelling of 21793032 in words is "twenty-one million, seven hundred ninety-three thousand, thirty-two".