305080730 has 16 divisors (see below), whose sum is σ = 550120680. Its totient is φ = 121815552.

The previous prime is 305080723. The next prime is 305080751. The reversal of 305080730 is 37080503.

It can be written as a sum of positive squares in 4 ways, for example, as 274200481 + 30880249 = 16559^2 + 5557^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 305080730.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21119 + ... + 32498.

Almost surely, 2^305080730 is an apocalyptic number.

305080730 is a deficient number, since it is larger than the sum of its proper divisors (245039950).

305080730 is a wasteful number, since it uses less digits than its factorization.

305080730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54193.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 305080730 is about 17466.5603368265. The cubic root of 305080730 is about 673.1909345529.

The spelling of 305080730 in words is "three hundred five million, eighty thousand, seven hundred thirty".