20793123 has 24 divisors (see below), whose sum is σ = 33105072. Its totient is φ = 12495168.

The previous prime is 20793121. The next prime is 20793133. The reversal of 20793123 is 32139702.

It is not a de Polignac number, because 20793123 - 2¹ = 20793121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20793121) 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 23 ways as a sum of consecutive naturals, for example, 2965 + ... + 7097.

It is an arithmetic number, because the mean of its divisors is an integer number (1379378).

Almost surely, 2^20793123 is an apocalyptic number.

20793123 is a deficient number, since it is larger than the sum of its proper divisors (12311949).

20793123 is a wasteful number, since it uses less digits than its factorization.

20793123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195 (or 4192 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20793123 is about 4559.9476970685. The cubic root of 20793123 is about 274.9834612643.

The spelling of 20793123 in words is "twenty million, seven hundred ninety-three thousand, one hundred twenty-three".