1228648 has 16 divisors (see below), whose sum is σ = 2326500. Its totient is φ = 608256.

The previous prime is 1228631. The next prime is 1228651. The reversal of 1228648 is 8468221.

It can be written as a sum of positive squares in 2 ways, for example, as 1162084 + 66564 = 1078^2 + 258^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168 + ... + 1576.

2^1228648 is an apocalyptic number.

It is an amenable number.

1228648 is a deficient number, since it is larger than the sum of its proper divisors (1097852).

1228648 is a wasteful number, since it uses less digits than its factorization.

1228648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 1520 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 1228648 is about 1108.4439543793. The cubic root of 1228648 is about 107.1048554331.

The spelling of 1228648 in words is "one million, two hundred twenty-eight thousand, six hundred forty-eight".