1227808 has 48 divisors (see below), whose sum is σ = 2671704. Its totient is φ = 552960.

The previous prime is 1227797. The next prime is 1227829. The reversal of 1227808 is 8087221.

It can be written as a sum of positive squares in 4 ways, for example, as 1106704 + 121104 = 1052^2 + 348^2 .

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, 20098 + ... + 20158.

2^1227808 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 1227808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1335852).

1227808 is an abundant number, since it is smaller than the sum of its proper divisors (1443896).

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

1227808 is a wasteful number, since it uses less digits than its factorization.

1227808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 1227808 is about 1108.0649800440. The cubic root of 1227808 is about 107.0804414460.

It can be divided in two parts, 122 and 7808, that multiplied together give a square (952576 = 976²).

The spelling of 1227808 in words is "one million, two hundred twenty-seven thousand, eight hundred eight".