20288086 has 32 divisors (see below), whose sum is σ = 39432960. Its totient is φ = 7602336.

The previous prime is 20288063. The next prime is 20288113. The reversal of 20288086 is 68088202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525 + ... + 6391.

It is an arithmetic number, because the mean of its divisors is an integer number (1232280).

Almost surely, 2^20288086 is an apocalyptic number.

20288086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20288086 is a deficient number, since it is larger than the sum of its proper divisors (19144874).

20288086 is a wasteful number, since it uses less digits than its factorization.

20288086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 20288086 is about 4504.2297898753. The cubic root of 20288086 is about 272.7388630293.

It can be divided in two parts, 202 and 88086, that added together give a palindrome (88288).

The spelling of 20288086 in words is "twenty million, two hundred eighty-eight thousand, eighty-six".