20013306 has 16 divisors (see below), whose sum is σ = 41407200. Its totient is φ = 6441008.

The previous prime is 20013299. The next prime is 20013311. The reversal of 20013306 is 60331002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57336 + ... + 57683.

It is an arithmetic number, because the mean of its divisors is an integer number (2587950).

Almost surely, 2^20013306 is an apocalyptic number.

20013306 is an abundant number, since it is smaller than the sum of its proper divisors (21393894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20013306 is a wasteful number, since it uses less digits than its factorization.

20013306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115053.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20013306 is about 4473.6233636729. The cubic root of 20013306 is about 271.5019450495.

Adding to 20013306 its reverse (60331002), we get a palindrome (80344308).

The spelling of 20013306 in words is "twenty million, thirteen thousand, three hundred six".