20103304 has 16 divisors (see below), whose sum is σ = 40593420. Its totient is φ = 9278400.

The previous prime is 20103301. The next prime is 20103313. The reversal of 20103304 is 40330102.

It can be written as a sum of positive squares in 2 ways, for example, as 14822500 + 5280804 = 3850^2 + 2298^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (20103301) 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, 96547 + ... + 96754.

Almost surely, 2^20103304 is an apocalyptic number.

It is an amenable number.

20103304 is an abundant number, since it is smaller than the sum of its proper divisors (20490116).

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

20103304 is a wasteful number, since it uses less digits than its factorization.

20103304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193320 (or 193316 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20103304 is about 4483.6708175333. The cubic root of 20103304 is about 271.9083096370.

Adding to 20103304 its reverse (40330102), we get a palindrome (60433406).

The spelling of 20103304 in words is "twenty million, one hundred three thousand, three hundred four".