20100304 has 40 divisors (see below), whose sum is σ = 44782848. Its totient is φ = 8561280.

The previous prime is 20100299. The next prime is 20100317. The reversal of 20100304 is 40300102.

It is a congruent number.

It is an unprimeable number.

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, 21609 + ... + 22519.

Almost surely, 2^20100304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22391424).

20100304 is an abundant number, since it is smaller than the sum of its proper divisors (24682544).

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

20100304 is a wasteful number, since it uses less digits than its factorization.

20100304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20100304 is about 4483.3362577438. The cubic root of 20100304 is about 271.8947834109.

Adding to 20100304 its reverse (40300102), we get a palindrome (60400406).

The spelling of 20100304 in words is "twenty million, one hundred thousand, three hundred four".