20303112 has 32 divisors (see below), whose sum is σ = 52966080. Its totient is φ = 6473280.

The previous prime is 20303111. The next prime is 20303119. The reversal of 20303112 is 21130302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20303111) 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, 17839 + ... + 18942.

It is an arithmetic number, because the mean of its divisors is an integer number (1655190).

Almost surely, 2^20303112 is an apocalyptic number.

It is an amenable number.

20303112 is an abundant number, since it is smaller than the sum of its proper divisors (32662968).

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

20303112 is a wasteful number, since it uses less digits than its factorization.

20303112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36813 (or 36809 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20303112 is about 4505.8974688734. The cubic root of 20303112 is about 272.8061794308.

Adding to 20303112 its reverse (21130302), we get a palindrome (41433414).

The spelling of 20303112 in words is "twenty million, three hundred three thousand, one hundred twelve".