21933032 has 32 divisors (see below), whose sum is σ = 45964800. Its totient is φ = 9724800.

The previous prime is 21933029. The next prime is 21933047. The reversal of 21933032 is 23033912.

It is a junction number, because it is equal to n+sod(n) for n = 21932989 and 21933007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569 + ... + 6647.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^21933032 is an apocalyptic number.

21933032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21933032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22982400).

21933032 is an abundant number, since it is smaller than the sum of its proper divisors (24031768).

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

21933032 is a wasteful number, since it uses less digits than its factorization.

21933032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137 (or 6133 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 21933032 is about 4683.2715061162. The cubic root of 21933032 is about 279.9193305024.

Adding to 21933032 its reverse (23033912), we get a palindrome (44966944).

It can be divided in two parts, 2193 and 3032, that added together give a palindrome (5225).

The spelling of 21933032 in words is "twenty-one million, nine hundred thirty-three thousand, thirty-two".