308627228 has 48 divisors (see below), whose sum is σ = 671665344. Its totient is φ = 120821760.

The previous prime is 308627191. The next prime is 308627233. The reversal of 308627228 is 822726803.

308627228 = 6637² + 6638² + ... + 6643².

It is a junction number, because it is equal to n+sod(n) for n = 308627191 and 308627200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30938 + ... + 39678.

It is an arithmetic number, because the mean of its divisors is an integer number (13993028).

Almost surely, 2^308627228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308627228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335832672).

308627228 is an abundant number, since it is smaller than the sum of its proper divisors (363038116).

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

308627228 is a wasteful number, since it uses less digits than its factorization.

308627228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8862 (or 8860 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 308627228 is about 17567.7895023819. The cubic root of 308627228 is about 675.7894580257.

It can be divided in two parts, 3086272 and 28, that multiplied together give a square (86415616 = 9296²).

The spelling of 308627228 in words is "three hundred eight million, six hundred twenty-seven thousand, two hundred twenty-eight".