1128413 has 12 divisors (see below), whose sum is σ = 1335168. Its totient is φ = 945360.

The previous prime is 1128397. The next prime is 1128427. The reversal of 1128413 is 3148211.

Added to its reverse (3148211) it gives a square (4276624 = 2068²).

It is not a de Polignac number, because 1128413 - 2⁴ = 1128397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1556 + ... + 2162.

It is an arithmetic number, because the mean of its divisors is an integer number (111264).

2^1128413 is an apocalyptic number.

1128413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1128413 is a deficient number, since it is larger than the sum of its proper divisors (206755).

1128413 is a wasteful number, since it uses less digits than its factorization.

1128413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 631 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 1128413 is about 1062.2678569928. The cubic root of 1128413 is about 104.1092601734.

Adding to 1128413 its reverse (3148211), we get a square (4276624 = 2068²).

The spelling of 1128413 in words is "one million, one hundred twenty-eight thousand, four hundred thirteen".