21675096 has 48 divisors (see below), whose sum is σ = 60077160. Its totient is φ = 7056000.

The previous prime is 21675091. The next prime is 21675109. The reversal of 21675096 is 69057612.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 21675096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21675091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405 + ... + 6596.

Almost surely, 2^21675096 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 21675096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30038580).

21675096 is an abundant number, since it is smaller than the sum of its proper divisors (38402064).

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

21675096 is a wasteful number, since it uses less digits than its factorization.

21675096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056 (or 7049 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 21675096 is about 4655.6520488542. The cubic root of 21675096 is about 278.8177018553.

The spelling of 21675096 in words is "twenty-one million, six hundred seventy-five thousand, ninety-six".