100400304 has 40 divisors (see below), whose sum is σ = 263247040. Its totient is φ = 32966208.

The previous prime is 100400273. The next prime is 100400323. The reversal of 100400304 is 403004001.

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

It is a self number, because there is not a number n which added to its sum of digits gives 100400304.

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, 12394 + ... + 18825.

It is an arithmetic number, because the mean of its divisors is an integer number (6581176).

Almost surely, 2^100400304 is an apocalyptic number.

It is an amenable number.

100400304 is an abundant number, since it is smaller than the sum of its proper divisors (162846736).

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

100400304 is a wasteful number, since it uses less digits than its factorization.

100400304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31297 (or 31291 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 100400304 is about 10019.9952095797. The cubic root of 100400304 is about 464.7774076270. Note that the first 3 decimals are identical.

Adding to 100400304 its reverse (403004001), we get a palindrome (503404305).

The spelling of 100400304 in words is "one hundred million, four hundred thousand, three hundred four".