304180640 has 96 divisors (see below), whose sum is σ = 745854480. Its totient is φ = 117145600.

The previous prime is 304180637. The next prime is 304180661. The reversal of 304180640 is 46081403.

It can be written as a sum of positive squares in 8 ways, for example, as 7376656 + 296803984 = 2716^2 + 17228^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583580 + ... + 584100.

Almost surely, 2^304180640 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 304180640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372927240).

304180640 is an abundant number, since it is smaller than the sum of its proper divisors (441673840).

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

304180640 is a wasteful number, since it uses less digits than its factorization.

304180640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 304180640 is about 17440.7752121286. The cubic root of 304180640 is about 672.5282364010.

The spelling of 304180640 in words is "three hundred four million, one hundred eighty thousand, six hundred forty".