20963288 has 16 divisors (see below), whose sum is σ = 40662000. Its totient is φ = 10120096.

The previous prime is 20963287. The next prime is 20963339. The reversal of 20963288 is 88236902.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20963287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44948 + ... + 45411.

It is an arithmetic number, because the mean of its divisors is an integer number (2541375).

Almost surely, 2^20963288 is an apocalyptic number.

It is an amenable number.

20963288 is a deficient number, since it is larger than the sum of its proper divisors (19698712).

20963288 is a wasteful number, since it uses less digits than its factorization.

20963288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90394 (or 90390 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20963288 is about 4578.5683351895. The cubic root of 20963288 is about 275.7315530287.

The spelling of 20963288 in words is "twenty million, nine hundred sixty-three thousand, two hundred eighty-eight".