308428746 has 16 divisors (see below), whose sum is σ = 638128800. Its totient is φ = 99264368.

The previous prime is 308428741. The next prime is 308428753. The reversal of 308428746 is 647824803.

It is a junction number, because it is equal to n+sod(n) for n = 308428698 and 308428707.

It is not an unprimeable number, because it can be changed into a prime (308428741) 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, 886116 + ... + 886463.

It is an arithmetic number, because the mean of its divisors is an integer number (39883050).

Almost surely, 2^308428746 is an apocalyptic number.

308428746 is an abundant number, since it is smaller than the sum of its proper divisors (329700054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308428746 is a wasteful number, since it uses less digits than its factorization.

308428746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772613.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 308428746 is about 17562.1395621376. The cubic root of 308428746 is about 675.6445574301.

The spelling of 308428746 in words is "three hundred eight million, four hundred twenty-eight thousand, seven hundred forty-six".