1128447 has 6 divisors (see below), whose sum is σ = 1629992. Its totient is φ = 752292.

The previous prime is 1128433. The next prime is 1128451. The reversal of 1128447 is 7448211.

It is not a de Polignac number, because 1128447 - 2⁶ = 1128383 is a prime.

It is a Duffinian number.

1128447 is a lucky number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1128447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62683 + ... + 62700.

2^1128447 is an apocalyptic number.

1128447 is a deficient number, since it is larger than the sum of its proper divisors (501545).

1128447 is a wasteful number, since it uses less digits than its factorization.

1128447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125389 (or 125386 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 1128447 is about 1062.2838603688. The cubic root of 1128447 is about 104.1103057951.

The spelling of 1128447 in words is "one million, one hundred twenty-eight thousand, four hundred forty-seven".