304309872 has 240 divisors, whose sum is σ = 955438848. Its totient is φ = 93519360.

The previous prime is 304309853. The next prime is 304309879. The reversal of 304309872 is 278903403.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304309879) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3666343 + ... + 3666425.

Almost surely, 2^304309872 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 304309872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477719424).

304309872 is an abundant number, since it is smaller than the sum of its proper divisors (651128976).

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

304309872 is a wasteful number, since it uses less digits than its factorization.

304309872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 304309872 is about 17444.4796998936. The cubic root of 304309872 is about 672.6234647535.

The spelling of 304309872 in words is "three hundred four million, three hundred nine thousand, eight hundred seventy-two".