21726096 has 40 divisors (see below), whose sum is σ = 64144704. Its totient is φ = 6207360.

The previous prime is 21726073. The next prime is 21726113. The reversal of 21726096 is 69062712.

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, 31995 + ... + 32666.

Almost surely, 2^21726096 is an apocalyptic number.

It is an amenable number.

21726096 is an abundant number, since it is smaller than the sum of its proper divisors (42418608).

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

21726096 is a wasteful number, since it uses less digits than its factorization.

21726096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64679 (or 64673 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 21726096 is about 4661.1260442086. The cubic root of 21726096 is about 279.0362101485.

The spelling of 21726096 in words is "twenty-one million, seven hundred twenty-six thousand, ninety-six".