308278230 has 64 divisors (see below), whose sum is σ = 838736640. Its totient is φ = 71888256.

The previous prime is 308278199. The next prime is 308278241. The reversal of 308278230 is 32872803.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 308278191 and 308278200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13392 + ... + 28211.

It is an arithmetic number, because the mean of its divisors is an integer number (13105260).

Almost surely, 2^308278230 is an apocalyptic number.

308278230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

308278230 is an abundant number, since it is smaller than the sum of its proper divisors (530458410).

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

308278230 is a wasteful number, since it uses less digits than its factorization.

308278230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41645.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 308278230 is about 17557.8537982294. The cubic root of 308278230 is about 675.5346326747.

The spelling of 308278230 in words is "three hundred eight million, two hundred seventy-eight thousand, two hundred thirty".