1117280 has 24 divisors (see below), whose sum is σ = 2639952. Its totient is φ = 446848.

The previous prime is 1117279. The next prime is 1117301. The reversal of 1117280 is 827111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3332 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (109998).

2^1117280 is an apocalyptic number.

1117280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1117280 is an abundant number, since it is smaller than the sum of its proper divisors (1522672).

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

1117280 is an equidigital number, since it uses as much as digits as its factorization.

1117280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6998 (or 6990 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 1117280 is about 1057.0146640421. The cubic root of 1117280 is about 103.7657449371.

The spelling of 1117280 in words is "one million, one hundred seventeen thousand, two hundred eighty".