1118280 has 32 divisors (see below), whose sum is σ = 3355200. Its totient is φ = 298176.

The previous prime is 1118267. The next prime is 1118291. The reversal of 1118280 is 828111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4540 + ... + 4779.

It is an arithmetic number, because the mean of its divisors is an integer number (104850).

2^1118280 is an apocalyptic number.

1118280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1118280 is an abundant number, since it is smaller than the sum of its proper divisors (2236920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1118280 is a wasteful number, since it uses less digits than its factorization.

1118280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333 (or 9329 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 1118280 is about 1057.4875885796. The cubic root of 1118280 is about 103.7966935511.

The spelling of 1118280 in words is "one million, one hundred eighteen thousand, two hundred eighty".