20793879 has 6 divisors (see below), whose sum is σ = 30035616. Its totient is φ = 13862580.

The previous prime is 20793859. The next prime is 20793931. The reversal of 20793879 is 97839702.

It is not a de Polignac number, because 20793879 - 2¹¹ = 20791831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20793859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1155207 + ... + 1155224.

It is an arithmetic number, because the mean of its divisors is an integer number (5005936).

Almost surely, 2^20793879 is an apocalyptic number.

20793879 is a deficient number, since it is larger than the sum of its proper divisors (9241737).

20793879 is a wasteful number, since it uses less digits than its factorization.

20793879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310437 (or 2310434 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 20793879 is about 4560.0305920026. The cubic root of 20793879 is about 274.9867938562.

The spelling of 20793879 in words is "twenty million, seven hundred ninety-three thousand, eight hundred seventy-nine".