21794332 has 48 divisors (see below), whose sum is σ = 45411520. Its totient is φ = 8957952.

The previous prime is 21794299. The next prime is 21794347. The reversal of 21794332 is 23349712.

It is a junction number, because it is equal to n+sod(n) for n = 21794294 and 21794303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112828 + ... + 113020.

Almost surely, 2^21794332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21794332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22705760).

21794332 is an abundant number, since it is smaller than the sum of its proper divisors (23617188).

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

21794332 is a wasteful number, since it uses less digits than its factorization.

21794332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 348 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 21794332 is about 4668.4399964014. The cubic root of 21794332 is about 279.3280314984.

It can be divided in two parts, 217 and 94332, that added together give a palindrome (94549).

The spelling of 21794332 in words is "twenty-one million, seven hundred ninety-four thousand, three hundred thirty-two".