20417133 has 16 divisors (see below), whose sum is σ = 29799936. Its totient is φ = 12331440.

The previous prime is 20417107. The next prime is 20417143. The reversal of 20417133 is 33171402.

It is not a de Polignac number, because 20417133 - 2⁵ = 20417101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20417143) 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, 10560 + ... + 12342.

It is an arithmetic number, because the mean of its divisors is an integer number (1862496).

Almost surely, 2^20417133 is an apocalyptic number.

It is an amenable number.

20417133 is a deficient number, since it is larger than the sum of its proper divisors (9382803).

20417133 is a wasteful number, since it uses less digits than its factorization.

20417133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20417133 is about 4518.5321731731. The cubic root of 20417133 is about 273.3159138545.

Adding to 20417133 its reverse (33171402), we get a palindrome (53588535).

The spelling of 20417133 in words is "twenty million, four hundred seventeen thousand, one hundred thirty-three".