1128490 has 16 divisors (see below), whose sum is σ = 2216160. Its totient is φ = 410320.

The previous prime is 1128451. The next prime is 1128497. The reversal of 1128490 is 948211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1128497) 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, 5020 + ... + 5239.

It is an arithmetic number, because the mean of its divisors is an integer number (138510).

2^1128490 is an apocalyptic number.

1128490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128490 is a deficient number, since it is larger than the sum of its proper divisors (1087670).

1128490 is a wasteful number, since it uses less digits than its factorization.

1128490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10277.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1128490 is about 1062.3040995873. The cubic root of 1128490 is about 104.1116281689. Note that the first 3 decimals are identical.

The spelling of 1128490 in words is "one million, one hundred twenty-eight thousand, four hundred ninety".