20865914 has 16 divisors (see below), whose sum is σ = 34010880. Its totient is φ = 9564480.

The previous prime is 20865863. The next prime is 20865931. The reversal of 20865914 is 41956802.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7679 + ... + 10034.

It is an arithmetic number, because the mean of its divisors is an integer number (2125680).

Almost surely, 2^20865914 is an apocalyptic number.

20865914 is a deficient number, since it is larger than the sum of its proper divisors (13144966).

20865914 is a wasteful number, since it uses less digits than its factorization.

20865914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17765.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 20865914 is about 4567.9222848030. The cubic root of 20865914 is about 275.3039680210.

It can be divided in two parts, 2086 and 5914, that added together give a cube (8000 = 20³).

The spelling of 20865914 in words is "twenty million, eight hundred sixty-five thousand, nine hundred fourteen".