1227828 has 48 divisors (see below), whose sum is σ = 3354624. Its totient is φ = 342240.

The previous prime is 1227797. The next prime is 1227829. The reversal of 1227828 is 8287221.

It is a happy number.

1227828 is nontrivially palindromic in base 5.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1227795 and 1227804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3793 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (69888).

2^1227828 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 1227828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677312).

1227828 is an abundant number, since it is smaller than the sum of its proper divisors (2126796).

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

1227828 is a wasteful number, since it uses less digits than its factorization.

1227828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 370 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 1227828 is about 1108.0740047488. The cubic root of 1227828 is about 107.0810228607.

The spelling of 1227828 in words is "one million, two hundred twenty-seven thousand, eight hundred twenty-eight".