20013230 has 16 divisors (see below), whose sum is σ = 36210240. Its totient is φ = 7963872.

The previous prime is 20013223. The next prime is 20013239. The reversal of 20013230 is 3231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3110 + ... + 7049.

It is an arithmetic number, because the mean of its divisors is an integer number (2263140).

Almost surely, 2^20013230 is an apocalyptic number.

20013230 is a deficient number, since it is larger than the sum of its proper divisors (16197010).

20013230 is a wasteful number, since it uses less digits than its factorization.

20013230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10363.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20013230 is about 4473.6148694317. The cubic root of 20013230 is about 271.5016013752.

Adding to 20013230 its reverse (3231002), we get a palindrome (23244232).

The spelling of 20013230 in words is "twenty million, thirteen thousand, two hundred thirty".