20005233 has 16 divisors (see below), whose sum is σ = 28200000. Its totient is φ = 12579840.

The previous prime is 20005231. The next prime is 20005259. The reversal of 20005233 is 33250002.

It is not a de Polignac number, because 20005233 - 2¹ = 20005231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20005231) 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, 15393 + ... + 16641.

It is an arithmetic number, because the mean of its divisors is an integer number (1762500).

Almost surely, 2^20005233 is an apocalyptic number.

It is an amenable number.

20005233 is a deficient number, since it is larger than the sum of its proper divisors (8194767).

20005233 is a wasteful number, since it uses less digits than its factorization.

20005233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 20005233 is about 4472.7209839202. The cubic root of 20005233 is about 271.4654338406.

Adding to 20005233 its reverse (33250002), we get a palindrome (53255235).

The spelling of 20005233 in words is "twenty million, five thousand, two hundred thirty-three".