304380720 has 320 divisors, whose sum is σ = 1229921280. Its totient is φ = 67737600.

The previous prime is 304380701. The next prime is 304380721. The reversal of 304380720 is 27083403.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (304380721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 619675 + ... + 620165.

It is an arithmetic number, because the mean of its divisors is an integer number (3843504).

Almost surely, 2^304380720 is an apocalyptic number.

304380720 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 304380720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614960640).

304380720 is an abundant number, since it is smaller than the sum of its proper divisors (925540560).

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

304380720 is a wasteful number, since it uses less digits than its factorization.

304380720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 304380720 is about 17446.5102527697. The cubic root of 304380720 is about 672.6756597187.

The spelling of 304380720 in words is "three hundred four million, three hundred eighty thousand, seven hundred twenty".