20796615 has 64 divisors (see below), whose sum is σ = 43084800. Its totient is φ = 9320832.

The previous prime is 20796551. The next prime is 20796619. The reversal of 20796615 is 51669702.

It is not a de Polignac number, because 20796615 - 2⁶ = 20796551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20796615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20796619) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55569 + ... + 55941.

It is an arithmetic number, because the mean of its divisors is an integer number (673200).

Almost surely, 2^20796615 is an apocalyptic number.

20796615 is an abundant number, since it is smaller than the sum of its proper divisors (22288185).

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

20796615 is a wasteful number, since it uses less digits than its factorization.

20796615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 447 counting only the distinct ones).

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

The square root of 20796615 is about 4560.3305801225. The cubic root of 20796615 is about 274.9988539897.

The spelling of 20796615 in words is "twenty million, seven hundred ninety-six thousand, six hundred fifteen".