20133207 has 12 divisors (see below), whose sum is σ = 29178864. Its totient is φ = 13377120.

The previous prime is 20133199. The next prime is 20133247. The reversal of 20133207 is 70233102.

It is not a de Polignac number, because 20133207 - 2³ = 20133199 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20133207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 798 + ... + 6395.

It is an arithmetic number, because the mean of its divisors is an integer number (2431572).

Almost surely, 2^20133207 is an apocalyptic number.

20133207 is a deficient number, since it is larger than the sum of its proper divisors (9045657).

20133207 is a wasteful number, since it uses less digits than its factorization.

20133207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510 (or 7507 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 20133207 is about 4487.0042344531. The cubic root of 20133207 is about 272.0430610531.

Adding to 20133207 its reverse (70233102), we get a palindrome (90366309).

The spelling of 20133207 in words is "twenty million, one hundred thirty-three thousand, two hundred seven".