20373859 has 12 divisors (see below), whose sum is σ = 22553608. Its totient is φ = 18390240.

The previous prime is 20373841. The next prime is 20373869. The reversal of 20373859 is 95837302.

It is not a de Polignac number, because 20373859 - 2⁵ = 20373827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20373869) 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 11 ways as a sum of consecutive naturals, for example, 19207 + ... + 20239.

Almost surely, 2^20373859 is an apocalyptic number.

20373859 is a deficient number, since it is larger than the sum of its proper divisors (2179749).

20373859 is a wasteful number, since it uses less digits than its factorization.

20373859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1207 counting only the distinct ones).

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

The square root of 20373859 is about 4513.7411312569. The cubic root of 20373859 is about 273.1226800837.

The spelling of 20373859 in words is "twenty million, three hundred seventy-three thousand, eight hundred fifty-nine".