20332005 has 16 divisors (see below), whose sum is σ = 32607360. Its totient is φ = 10818368.

The previous prime is 20331989. The next prime is 20332043. The reversal of 20332005 is 50023302.

It is a cyclic number.

It is not a de Polignac number, because 20332005 - 2⁴ = 20331989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6304 + ... + 8966.

It is an arithmetic number, because the mean of its divisors is an integer number (2037960).

Almost surely, 2^20332005 is an apocalyptic number.

It is an amenable number.

20332005 is a deficient number, since it is larger than the sum of its proper divisors (12275355).

20332005 is a wasteful number, since it uses less digits than its factorization.

20332005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180.

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

The square root of 20332005 is about 4509.1024605790. The cubic root of 20332005 is about 272.9355266444.

Adding to 20332005 its reverse (50023302), we get a palindrome (70355307).

The spelling of 20332005 in words is "twenty million, three hundred thirty-two thousand, five".