1128455 has 8 divisors (see below), whose sum is σ = 1360800. Its totient is φ = 898336.

The previous prime is 1128451. The next prime is 1128497. The reversal of 1128455 is 5548211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1128455 - 2² = 1128451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926 + ... + 1764.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2^1128455 is an apocalyptic number.

1128455 is a deficient number, since it is larger than the sum of its proper divisors (232345).

1128455 is an equidigital number, since it uses as much as digits as its factorization.

1128455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113.

The product of its digits is 1600, while the sum is 26.

The square root of 1128455 is about 1062.2876258340. The cubic root of 1128455 is about 104.1105518207.

The spelling of 1128455 in words is "one million, one hundred twenty-eight thousand, four hundred fifty-five".