21941332 has 12 divisors (see below), whose sum is σ = 43882720. Its totient is φ = 9403416.

The previous prime is 21941329. The next prime is 21941351. The reversal of 21941332 is 23314912.

21941332 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21941297 and 21941306.

It is a congruent number.

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, 391782 + ... + 391837.

Almost surely, 2^21941332 is an apocalyptic number.

It is an amenable number.

21941332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21941332 is a wasteful number, since it uses less digits than its factorization.

21941332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783630 (or 783628 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 21941332 is about 4684.1575549932. The cubic root of 21941332 is about 279.9546355078.

The spelling of 21941332 in words is "twenty-one million, nine hundred forty-one thousand, three hundred thirty-two".