308479145 has 8 divisors (see below), whose sum is σ = 398650056. Its totient is φ = 227799936.

The previous prime is 308479141. The next prime is 308479163. The reversal of 308479145 is 541974803.

It can be written as a sum of positive squares in 4 ways, for example, as 11916304 + 296562841 = 3452^2 + 17221^2 .

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

It is not a de Polignac number, because 308479145 - 2² = 308479141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (308479141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2372852 + ... + 2372981.

It is an arithmetic number, because the mean of its divisors is an integer number (49831257).

Almost surely, 2^308479145 is an apocalyptic number.

It is an amenable number.

308479145 is a deficient number, since it is larger than the sum of its proper divisors (90170911).

308479145 is a wasteful number, since it uses less digits than its factorization.

308479145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745851.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 308479145 is about 17563.5743799490. The cubic root of 308479145 is about 675.6813568053.

The spelling of 308479145 in words is "three hundred eight million, four hundred seventy-nine thousand, one hundred forty-five".