20032285 has 16 divisors (see below), whose sum is σ = 29586816. Its totient is φ = 12679488.

The previous prime is 20032283. The next prime is 20032321. The reversal of 20032285 is 58223002.

It is a cyclic number.

It is not a de Polignac number, because 20032285 - 2¹ = 20032283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21559 + ... + 22468.

It is an arithmetic number, because the mean of its divisors is an integer number (1849176).

Almost surely, 2^20032285 is an apocalyptic number.

It is an amenable number.

20032285 is a deficient number, since it is larger than the sum of its proper divisors (9554531).

20032285 is a wasteful number, since it uses less digits than its factorization.

20032285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44052.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20032285 is about 4475.7440722186. The cubic root of 20032285 is about 271.5877414263.

Adding to 20032285 its reverse (58223002), we get a palindrome (78255287).

The spelling of 20032285 in words is "twenty million, thirty-two thousand, two hundred eighty-five".