20375993 has 4 divisors (see below), whose sum is σ = 22228368. Its totient is φ = 18523620.

The previous prime is 20375989. The next prime is 20376001. The reversal of 20375993 is 39957302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20375993 - 2² = 20375989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20375933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926171 + ... + 926192.

It is an arithmetic number, because the mean of its divisors is an integer number (5557092).

Almost surely, 2^20375993 is an apocalyptic number.

It is an amenable number.

20375993 is a deficient number, since it is larger than the sum of its proper divisors (1852375).

20375993 is a wasteful number, since it uses less digits than its factorization.

20375993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852374.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 20375993 is about 4513.9775143436. The cubic root of 20375993 is about 273.1322155617.

The spelling of 20375993 in words is "twenty million, three hundred seventy-five thousand, nine hundred ninety-three".