2305728307 has 4 divisors (see below), whose sum is σ = 2323883776. Its totient is φ = 2287572840.

The previous prime is 2305728301. The next prime is 2305728329. The reversal of 2305728307 is 7038275032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2305728307 - 2³¹ = 158244659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2305728301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9077544 + ... + 9077797.

It is an arithmetic number, because the mean of its divisors is an integer number (580970944).

Almost surely, 2^2305728307 is an apocalyptic number.

2305728307 is a deficient number, since it is larger than the sum of its proper divisors (18155469).

2305728307 is a wasteful number, since it uses less digits than its factorization.

2305728307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18155468.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 2305728307 is about 48017.9998229830. Note that the first 3 decimals coincide. The cubic root of 2305728307 is about 1321.1010684023.

The spelling of 2305728307 in words is "two billion, three hundred five million, seven hundred twenty-eight thousand, three hundred seven".