21816096 has 24 divisors (see below), whose sum is σ = 57267504. Its totient is φ = 7272000.

The previous prime is 21816089. The next prime is 21816103. The reversal of 21816096 is 69061812.

It is an interprime number because it is at equal distance from previous prime (21816089) and next prime (21816103).

It is a tau number, because it is divible by the number of its divisors (24).

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, 113530 + ... + 113721.

It is an arithmetic number, because the mean of its divisors is an integer number (2386146).

Almost surely, 2^21816096 is an apocalyptic number.

It is an amenable number.

21816096 is an abundant number, since it is smaller than the sum of its proper divisors (35451408).

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

21816096 is a wasteful number, since it uses less digits than its factorization.

21816096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227264 (or 227256 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 21816096 is about 4670.7703861355. The cubic root of 21816096 is about 279.4209803255.

The spelling of 21816096 in words is "twenty-one million, eight hundred sixteen thousand, ninety-six".