1227728 has 10 divisors (see below), whose sum is σ = 2378754. Its totient is φ = 613856.

The previous prime is 1227719. The next prime is 1227769. The reversal of 1227728 is 8277221.

It can be written as a sum of positive squares in only one way, i.e., 1227664 + 64 = 1108^2 + 8^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1227728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38351 + ... + 38382.

2^1227728 is an apocalyptic number.

It is an amenable number.

1227728 is a deficient number, since it is larger than the sum of its proper divisors (1151026).

1227728 is an equidigital number, since it uses as much as digits as its factorization.

1227728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76741 (or 76735 counting only the distinct ones).

The product of its digits is 3136, while the sum is 29.

The square root of 1227728 is about 1108.0288804900. The cubic root of 1227728 is about 107.0781157236.

The spelling of 1227728 in words is "one million, two hundred twenty-seven thousand, seven hundred twenty-eight".