20333005 has 16 divisors (see below), whose sum is σ = 30420864. Its totient is φ = 12674880.

The previous prime is 20332981. The next prime is 20333009. The reversal of 20333005 is 50033302.

It is not a de Polignac number, because 20333005 - 2⁷ = 20332877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20333005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20333009) 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, 26022 + ... + 26791.

It is an arithmetic number, because the mean of its divisors is an integer number (1901304).

Almost surely, 2^20333005 is an apocalyptic number.

It is an amenable number.

20333005 is a deficient number, since it is larger than the sum of its proper divisors (10087859).

20333005 is a wasteful number, since it uses less digits than its factorization.

20333005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52836.

The product of its (nonzero) digits is 270, while the sum is 16.

The square root of 20333005 is about 4509.2133460283. The cubic root of 20333005 is about 272.9400012162.

Adding to 20333005 its reverse (50033302), we get a palindrome (70366307).

The spelling of 20333005 in words is "twenty million, three hundred thirty-three thousand, five".