20375893 has 8 divisors (see below), whose sum is σ = 21593880. Its totient is φ = 19192320.

The previous prime is 20375881. The next prime is 20375909. The reversal of 20375893 is 39857302.

It can be written as a sum of positive squares in 4 ways, for example, as 1077444 + 19298449 = 1038^2 + 4393^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20375893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20375813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7380 + ... + 9757.

It is an arithmetic number, because the mean of its divisors is an integer number (2699235).

Almost surely, 2^20375893 is an apocalyptic number.

It is an amenable number.

20375893 is a deficient number, since it is larger than the sum of its proper divisors (1217987).

20375893 is a wasteful number, since it uses less digits than its factorization.

20375893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17207.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 20375893 is about 4513.9664376245. The cubic root of 20375893 is about 273.1317687406.

The spelling of 20375893 in words is "twenty million, three hundred seventy-five thousand, eight hundred ninety-three".