1128550 has 12 divisors (see below), whose sum is σ = 2099196. Its totient is φ = 451400.

The previous prime is 1128539. The next prime is 1128553. The reversal of 1128550 is 558211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128553) 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, 11236 + ... + 11335.

It is an arithmetic number, because the mean of its divisors is an integer number (174933).

2^1128550 is an apocalyptic number.

1128550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128550 is a deficient number, since it is larger than the sum of its proper divisors (970646).

1128550 is a wasteful number, since it uses less digits than its factorization.

1128550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22583 (or 22578 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1128550 is about 1062.3323397130. The cubic root of 1128550 is about 104.1134732855.

It can be divided in two parts, 11 and 28550, that added together give a 4-th power (28561 = 13⁴).

The spelling of 1128550 in words is "one million, one hundred twenty-eight thousand, five hundred fifty".