20303012 has 12 divisors (see below), whose sum is σ = 35561820. Its totient is φ = 10142496.

The previous prime is 20303011. The next prime is 20303027. The reversal of 20303012 is 21030302.

It can be written as a sum of positive squares in 2 ways, for example, as 7529536 + 12773476 = 2744^2 + 3574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20302984 and 20303002.

It is not an unprimeable number, because it can be changed into a prime (20303011) 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, 7814 + ... + 10082.

It is an arithmetic number, because the mean of its divisors is an integer number (2963485).

Almost surely, 2^20303012 is an apocalyptic number.

It is an amenable number.

20303012 is a deficient number, since it is larger than the sum of its proper divisors (15258808).

20303012 is a wasteful number, since it uses less digits than its factorization.

20303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510 (or 4508 counting only the distinct ones).

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

The square root of 20303012 is about 4505.8863722912. The cubic root of 20303012 is about 272.8057315411.

Adding to 20303012 its reverse (21030302), we get a palindrome (41333314).

The spelling of 20303012 in words is "twenty million, three hundred three thousand, twelve".