20885233 has 8 divisors (see below), whose sum is σ = 21643200. Its totient is φ = 20140848.

The previous prime is 20885213. The next prime is 20885243. The reversal of 20885233 is 33258802.

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

It is not a de Polignac number, because 20885233 - 2⁵ = 20885201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20885195 and 20885204.

It is not an unprimeable number, because it can be changed into a prime (20885213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213 + ... + 6466.

It is an arithmetic number, because the mean of its divisors is an integer number (2705400).

Almost surely, 2^20885233 is an apocalyptic number.

It is an amenable number.

20885233 is a deficient number, since it is larger than the sum of its proper divisors (757967).

20885233 is an equidigital number, since it uses as much as digits as its factorization.

20885233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20885233 is about 4570.0364331152. The cubic root of 20885233 is about 275.3889064964.

The spelling of 20885233 in words is "twenty million, eight hundred eighty-five thousand, two hundred thirty-three".