20790873 has 24 divisors (see below), whose sum is σ = 32018688. Its totient is φ = 12969792.

The previous prime is 20790871. The next prime is 20790877. The reversal of 20790873 is 37809702.

It is not a de Polignac number, because 20790873 - 2¹ = 20790871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20790871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8661 + ... + 10797.

It is an arithmetic number, because the mean of its divisors is an integer number (1334112).

Almost surely, 2^20790873 is an apocalyptic number.

20790873 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20790873 is a deficient number, since it is larger than the sum of its proper divisors (11227815).

20790873 is a wasteful number, since it uses less digits than its factorization.

20790873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213 (or 2210 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 20790873 is about 4559.7009770379. The cubic root of 20790873 is about 274.9735423582.

The spelling of 20790873 in words is "twenty million, seven hundred ninety thousand, eight hundred seventy-three".