1113280 has 84 divisors (see below), whose sum is σ = 3127248. Its totient is φ = 376320.

The previous prime is 1113257. The next prime is 1113317. The reversal of 1113280 is 823111.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15645 + ... + 15715.

2^1113280 is an apocalyptic number.

1113280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1563624).

1113280 is an abundant number, since it is smaller than the sum of its proper divisors (2013968).

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

1113280 is an equidigital number, since it uses as much as digits as its factorization.

1113280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1113280 is about 1055.1208461593. The cubic root of 1113280 is about 103.6417654832.

Adding to 1113280 its reverse (823111), we get a palindrome (1936391).

The spelling of 1113280 in words is "one million, one hundred thirteen thousand, two hundred eighty".