308428879 has 12 divisors (see below), whose sum is σ = 340527880. Its totient is φ = 279140400.

The previous prime is 308428859. The next prime is 308428921. The reversal of 308428879 is 978824803.

It is not a de Polignac number, because 308428879 - 2¹⁷ = 308297807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308428819) 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 11 ways as a sum of consecutive naturals, for example, 22144 + ... + 33274.

Almost surely, 2^308428879 is an apocalyptic number.

308428879 is a deficient number, since it is larger than the sum of its proper divisors (32099001).

308428879 is a wasteful number, since it uses less digits than its factorization.

308428879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11382 (or 11371 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 308428879 is about 17562.1433486918. The cubic root of 308428879 is about 675.6446545468.

The spelling of 308428879 in words is "three hundred eight million, four hundred twenty-eight thousand, eight hundred seventy-nine".