308428079 has 8 divisors (see below), whose sum is σ = 319298160. Its totient is φ = 297573696.

The previous prime is 308428069. The next prime is 308428097. The reversal of 308428079 is 970824803.

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

It is a cyclic number.

It is not a de Polignac number, because 308428079 - 2²⁰ = 307379503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308428019) 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, 47804 + ... + 53870.

It is an arithmetic number, because the mean of its divisors is an integer number (39912270).

Almost surely, 2^308428079 is an apocalyptic number.

308428079 is a deficient number, since it is larger than the sum of its proper divisors (10870081).

308428079 is a wasteful number, since it uses less digits than its factorization.

308428079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7849.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 308428079 is about 17562.1205724138. The cubic root of 308428079 is about 675.6440703860.

The spelling of 308428079 in words is "three hundred eight million, four hundred twenty-eight thousand, seventy-nine".