20796775 has 12 divisors (see below), whose sum is σ = 26486152. Its totient is φ = 16187040.

The previous prime is 20796739. The next prime is 20796779. The reversal of 20796775 is 57769702.

It is a happy number.

It is not a de Polignac number, because 20796775 - 2²¹ = 18699623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20796779) 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, 10317 + ... + 12166.

Almost surely, 2^20796775 is an apocalyptic number.

20796775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20796775 is a deficient number, since it is larger than the sum of its proper divisors (5689377).

20796775 is a wasteful number, since it uses less digits than its factorization.

20796775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22530 (or 22525 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 20796775 is about 4560.3481226766. The cubic root of 20796775 is about 274.9995592279. Note that the first 3 decimals are identical.

The spelling of 20796775 in words is "twenty million, seven hundred ninety-six thousand, seven hundred seventy-five".