308378128 has 40 divisors (see below), whose sum is σ = 615764160. Its totient is φ = 149500800.

The previous prime is 308378101. The next prime is 308378129. The reversal of 308378128 is 821873803.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (308378129) 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, 211803 + ... + 213253.

It is an arithmetic number, because the mean of its divisors is an integer number (15394104).

Almost surely, 2^308378128 is an apocalyptic number.

It is an amenable number.

308378128 is a deficient number, since it is larger than the sum of its proper divisors (307386032).

308378128 is a wasteful number, since it uses less digits than its factorization.

308378128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 308378128 is about 17560.6983915788. The cubic root of 308378128 is about 675.6075941145.

The spelling of 308378128 in words is "three hundred eight million, three hundred seventy-eight thousand, one hundred twenty-eight".