20010885 has 16 divisors (see below), whose sum is σ = 32405184. Its totient is φ = 10543232.

The previous prime is 20010883. The next prime is 20010889. The reversal of 20010885 is 58801002.

It is a cyclic number.

It is not a de Polignac number, because 20010885 - 2¹ = 20010883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6792 + ... + 9281.

It is an arithmetic number, because the mean of its divisors is an integer number (2025324).

Almost surely, 2^20010885 is an apocalyptic number.

It is an amenable number.

20010885 is a deficient number, since it is larger than the sum of its proper divisors (12394299).

20010885 is a wasteful number, since it uses less digits than its factorization.

20010885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16164.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 20010885 is about 4473.3527694560. The cubic root of 20010885 is about 271.4909967881.

Adding to 20010885 its reverse (58801002), we get a palindrome (78811887).

The spelling of 20010885 in words is "twenty million, ten thousand, eight hundred eighty-five".