1228668 has 24 divisors (see below), whose sum is σ = 3276672. Its totient is φ = 351024.

The previous prime is 1228657. The next prime is 1228679. The reversal of 1228668 is 8668221.

It is an interprime number because it is at equal distance from previous prime (1228657) and next prime (1228679).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7230 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (136528).

2^1228668 is an apocalyptic number.

It is an amenable number.

1228668 is an abundant number, since it is smaller than the sum of its proper divisors (2048004).

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

1228668 is a wasteful number, since it uses less digits than its factorization.

1228668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14641 (or 14639 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 1228668 is about 1108.4529759985. The cubic root of 1228668 is about 107.1054365829.

It can be divided in two parts, 12 and 28668, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 1228668 in words is "one million, two hundred twenty-eight thousand, six hundred sixty-eight".