1117440 has 108 divisors (see below), whose sum is σ = 3906084. Its totient is φ = 294912.

The previous prime is 1117439. The next prime is 1117451. The reversal of 1117440 is 447111.

It can be written as a sum of positive squares in 2 ways, for example, as 451584 + 665856 = 672^2 + 816^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 11472 + ... + 11568.

2^1117440 is an apocalyptic number.

1117440 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 1117440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1953042).

1117440 is an abundant number, since it is smaller than the sum of its proper divisors (2788644).

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

1117440 is an equidigital number, since it uses as much as digits as its factorization.

1117440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 1117440 is about 1057.0903461862. The cubic root of 1117440 is about 103.7706979560.

The spelling of 1117440 in words is "one million, one hundred seventeen thousand, four hundred forty".