304045640 has 16 divisors (see below), whose sum is σ = 684102780. Its totient is φ = 121618240.

The previous prime is 304045639. The next prime is 304045673. The reversal of 304045640 is 46540403.

It can be written as a sum of positive squares in 2 ways, for example, as 243796996 + 60248644 = 15614^2 + 7762^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800531 + ... + 3800610.

Almost surely, 2^304045640 is an apocalyptic number.

It is an amenable number.

304045640 is an abundant number, since it is smaller than the sum of its proper divisors (380057140).

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

304045640 is a wasteful number, since it uses less digits than its factorization.

304045640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7601152 (or 7601148 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 304045640 is about 17436.9045418044. The cubic root of 304045640 is about 672.4287289211.

The spelling of 304045640 in words is "three hundred four million, forty-five thousand, six hundred forty".