20088906 has 16 divisors (see below), whose sum is σ = 40348800. Its totient is φ = 6667808.

The previous prime is 20088841. The next prime is 20088911. The reversal of 20088906 is 60988002.

It is a Smith number, since the sum of its digits (33) 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, 5571 + ... + 8438.

It is an arithmetic number, because the mean of its divisors is an integer number (2521800).

Almost surely, 2^20088906 is an apocalyptic number.

20088906 is an abundant number, since it is smaller than the sum of its proper divisors (20259894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20088906 is a wasteful number, since it uses less digits than its factorization.

20088906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 20088906 is about 4482.0649259019. The cubic root of 20088906 is about 271.8433804950.

The spelling of 20088906 in words is "twenty million, eighty-eight thousand, nine hundred six".