308456745 has 16 divisors (see below), whose sum is σ = 494313792. Its totient is φ = 164249280.

The previous prime is 308456719. The next prime is 308456747. The reversal of 308456745 is 547654803.

It is not a de Polignac number, because 308456745 - 2⁵ = 308456713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 308456697 and 308456706.

It is not an unprimeable number, because it can be changed into a prime (308456747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6346 + ... + 25635.

It is an arithmetic number, because the mean of its divisors is an integer number (30894612).

Almost surely, 2^308456745 is an apocalyptic number.

It is an amenable number.

308456745 is a deficient number, since it is larger than the sum of its proper divisors (185857047).

308456745 is a wasteful number, since it uses less digits than its factorization.

308456745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32632.

The product of its (nonzero) digits is 403200, while the sum is 42.

The square root of 308456745 is about 17562.9366849625. The cubic root of 308456745 is about 675.6650016978.

The spelling of 308456745 in words is "three hundred eight million, four hundred fifty-six thousand, seven hundred forty-five".