304223100 has 72 divisors (see below), whose sum is σ = 884110080. Its totient is φ = 80767680.

The previous prime is 304223099. The next prime is 304223107. The reversal of 304223100 is 1322403.

It is a super-2 number, since 2×304223100² = 185103389147220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 304223100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304223107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69579 + ... + 73821.

Almost surely, 2^304223100 is an apocalyptic number.

304223100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442055040).

304223100 is an abundant number, since it is smaller than the sum of its proper divisors (579886980).

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

304223100 is a wasteful number, since it uses less digits than its factorization.

304223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499 (or 4492 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 304223100 is about 17441.9924320589. The cubic root of 304223100 is about 672.5595272597.

Adding to 304223100 its reverse (1322403), we get a palindrome (305545503).

The spelling of 304223100 in words is "three hundred four million, two hundred twenty-three thousand, one hundred".