20207859 has 16 divisors (see below), whose sum is σ = 31039488. Its totient is φ = 11454912.

The previous prime is 20207851. The next prime is 20207861. The reversal of 20207859 is 95870202.

It is not a de Polignac number, because 20207859 - 2³ = 20207851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20207851) 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 15 ways as a sum of consecutive naturals, for example, 1122 + ... + 6455.

It is an arithmetic number, because the mean of its divisors is an integer number (1939968).

Almost surely, 2^20207859 is an apocalyptic number.

20207859 is a deficient number, since it is larger than the sum of its proper divisors (10831629).

20207859 is a wasteful number, since it uses less digits than its factorization.

20207859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 20207859 is about 4495.3152281014. The cubic root of 20207859 is about 272.3788828531.

The spelling of 20207859 in words is "twenty million, two hundred seven thousand, eight hundred fifty-nine".