306322745 has 8 divisors (see below), whose sum is σ = 389210184. Its totient is φ = 230642944.

The previous prime is 306322739. The next prime is 306322747. The reversal of 306322745 is 547223603.

It can be written as a sum of positive squares in 4 ways, for example, as 24720784 + 281601961 = 4972^2 + 16781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 306322745 - 2¹⁶ = 306257209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306322747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801814 + ... + 1801983.

It is an arithmetic number, because the mean of its divisors is an integer number (48651273).

Almost surely, 2^306322745 is an apocalyptic number.

It is an amenable number.

306322745 is a deficient number, since it is larger than the sum of its proper divisors (82887439).

306322745 is a wasteful number, since it uses less digits than its factorization.

306322745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603819.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 306322745 is about 17502.0783051614. The cubic root of 306322745 is about 674.1032407957.

The spelling of 306322745 in words is "three hundred six million, three hundred twenty-two thousand, seven hundred forty-five".