1228626 has 48 divisors (see below), whose sum is σ = 3120000. Its totient is φ = 349272.

The previous prime is 1228613. The next prime is 1228631. The reversal of 1228626 is 6268221.

1228626 is a `hidden beast` number, since 12 + 28 + 626 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1228626.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6075 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (65000).

2^1228626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560000).

1228626 is an abundant number, since it is smaller than the sum of its proper divisors (1891374).

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

1228626 is a wasteful number, since it uses less digits than its factorization.

1228626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 211 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 1228626 is about 1108.4340305133. The cubic root of 1228626 is about 107.1042161611.

The spelling of 1228626 in words is "one million, two hundred twenty-eight thousand, six hundred twenty-six".