21295696 has 40 divisors (see below), whose sum is σ = 44461440. Its totient is φ = 9844224.

The previous prime is 21295663. The next prime is 21295697. The reversal of 21295696 is 69659212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21295697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15385 + ... + 16711.

It is an arithmetic number, because the mean of its divisors is an integer number (1111536).

Almost surely, 2^21295696 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 21295696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22230720).

21295696 is an abundant number, since it is smaller than the sum of its proper divisors (23165744).

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

21295696 is a wasteful number, since it uses less digits than its factorization.

21295696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411 (or 1405 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 21295696 is about 4614.7259940326. The cubic root of 21295696 is about 277.1813120450.

The spelling of 21295696 in words is "twenty-one million, two hundred ninety-five thousand, six hundred ninety-six".