1128407 has 4 divisors (see below), whose sum is σ = 1289616. Its totient is φ = 967200.

The previous prime is 1128397. The next prime is 1128427. The reversal of 1128407 is 7048211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1128407 - 2⁸ = 1128151 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80594 + ... + 80607.

It is an arithmetic number, because the mean of its divisors is an integer number (322404).

2^1128407 is an apocalyptic number.

1128407 is a deficient number, since it is larger than the sum of its proper divisors (161209).

1128407 is an equidigital number, since it uses as much as digits as its factorization.

1128407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161208.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1128407 is about 1062.2650328426. The cubic root of 1128407 is about 104.1090756498.

The spelling of 1128407 in words is "one million, one hundred twenty-eight thousand, four hundred seven".