100020304 has 40 divisors (see below), whose sum is σ = 201895560. Its totient is φ = 47943168.

The previous prime is 100020269. The next prime is 100020331. The reversal of 100020304 is 403020001.

It can be written as a sum of positive squares in 4 ways, for example, as 35378704 + 64641600 = 5948^2 + 8040^2 .

It is a super-2 number, since 2×100020304² = 20008122424504832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72162 + ... + 73534.

It is an arithmetic number, because the mean of its divisors is an integer number (5047389).

Almost surely, 2^100020304 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 100020304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100947780).

100020304 is an abundant number, since it is smaller than the sum of its proper divisors (101875256).

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

100020304 is a wasteful number, since it uses less digits than its factorization.

100020304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1561 counting only the distinct ones).

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

The square root of 100020304 is about 10001.0151484737. The cubic root of 100020304 is about 464.1902955086.

Adding to 100020304 its reverse (403020001), we get a palindrome (503040305).

The spelling of 100020304 in words is "one hundred million, twenty thousand, three hundred four".