20088905 has 8 divisors (see below), whose sum is σ = 24397632. Its totient is φ = 15877168.

The previous prime is 20088841. The next prime is 20088911. The reversal of 20088905 is 50988002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20088905 - 2⁶ = 20088841 is a prime.

It is a Duffinian 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, 23789 + ... + 24618.

It is an arithmetic number, because the mean of its divisors is an integer number (3049704).

Almost surely, 2^20088905 is an apocalyptic number.

It is an amenable number.

20088905 is a deficient number, since it is larger than the sum of its proper divisors (4308727).

20088905 is an equidigital number, since it uses as much as digits as its factorization.

20088905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48495.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 20088905 is about 4482.0648143462. The cubic root of 20088905 is about 271.8433759844.

The spelling of 20088905 in words is "twenty million, eighty-eight thousand, nine hundred five".