21962332 has 48 divisors (see below), whose sum is σ = 46609920. Its totient is φ = 8851392.

The previous prime is 21962329. The next prime is 21962363. The reversal of 21962332 is 23326912.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 21962332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42894 + ... + 43402.

It is an arithmetic number, because the mean of its divisors is an integer number (971040).

Almost surely, 2^21962332 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 21962332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23304960).

21962332 is an abundant number, since it is smaller than the sum of its proper divisors (24647588).

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

21962332 is a wasteful number, since it uses less digits than its factorization.

21962332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 608 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 21962332 is about 4686.3986172753. The cubic root of 21962332 is about 280.0439216814.

The spelling of 21962332 in words is "twenty-one million, nine hundred sixty-two thousand, three hundred thirty-two".