21296652 has 48 divisors (see below), whose sum is σ = 53851392. Its totient is φ = 6511680.

The previous prime is 21296651. The next prime is 21296669. The reversal of 21296652 is 25669212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21296651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32593 + ... + 33239.

It is an arithmetic number, because the mean of its divisors is an integer number (1121904).

Almost surely, 2^21296652 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 21296652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26925696).

21296652 is an abundant number, since it is smaller than the sum of its proper divisors (32554740).

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

21296652 is a wasteful number, since it uses less digits than its factorization.

21296652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 876 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 21296652 is about 4614.8295743180. The cubic root of 21296652 is about 277.1854596964.

The spelling of 21296652 in words is "twenty-one million, two hundred ninety-six thousand, six hundred fifty-two".