20045336 has 16 divisors (see below), whose sum is σ = 37638000. Its totient is φ = 10008544.

The previous prime is 20045327. The next prime is 20045339. The reversal of 20045336 is 63354002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6590 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (2352375).

Almost surely, 2^20045336 is an apocalyptic number.

It is an amenable number.

20045336 is a deficient number, since it is larger than the sum of its proper divisors (17592664).

20045336 is a wasteful number, since it uses less digits than its factorization.

20045336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538 (or 3534 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20045336 is about 4477.2018046990. The cubic root of 20045336 is about 271.6467082749.

Adding to 20045336 its reverse (63354002), we get a palindrome (83399338).

The spelling of 20045336 in words is "twenty million, forty-five thousand, three hundred thirty-six".