21924696 has 96 divisors (see below), whose sum is σ = 60786000. Its totient is φ = 6580224.

The previous prime is 21924653. The next prime is 21924697. The reversal of 21924696 is 69642912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21924697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201090 + ... + 201198.

Almost surely, 2^21924696 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 21924696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30393000).

21924696 is an abundant number, since it is smaller than the sum of its proper divisors (38861304).

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

21924696 is a wasteful number, since it uses less digits than its factorization.

21924696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 160 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 21924696 is about 4682.3814453758. The cubic root of 21924696 is about 279.8838634009.

The spelling of 21924696 in words is "twenty-one million, nine hundred twenty-four thousand, six hundred ninety-six".