308028249 has 12 divisors (see below), whose sum is σ = 446127396. Its totient is φ = 204799392.

The previous prime is 308028239. The next prime is 308028251. The reversal of 308028249 is 942820803.

It can be written as a sum of positive squares in 2 ways, for example, as 241491600 + 66536649 = 15540^2 + 8157^2 .

It is not a de Polignac number, because 308028249 - 2⁴ = 308028233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (308028229) 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 11 ways as a sum of consecutive naturals, for example, 42522 + ... + 49235.

It is an arithmetic number, because the mean of its divisors is an integer number (37177283).

Almost surely, 2^308028249 is an apocalyptic number.

It is an amenable number.

308028249 is a deficient number, since it is larger than the sum of its proper divisors (138099147).

308028249 is a wasteful number, since it uses less digits than its factorization.

308028249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92136 (or 92133 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 308028249 is about 17550.7335744122. The cubic root of 308028249 is about 675.3519876129.

It can be divided in two parts, 3080 and 28249, that added together give a square (31329 = 177²).

The spelling of 308028249 in words is "three hundred eight million, twenty-eight thousand, two hundred forty-nine".