1118240 has 48 divisors (see below), whose sum is σ = 2744280. Its totient is φ = 430080.

The previous prime is 1118219. The next prime is 1118261. The reversal of 1118240 is 428111.

It is an interprime number because it is at equal distance from previous prime (1118219) and next prime (1118261).

It can be written as a sum of positive squares in 4 ways, for example, as 1008016 + 110224 = 1004^2 + 332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4520 + ... + 4760.

2^1118240 is an apocalyptic number.

1118240 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 1118240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372140).

1118240 is an abundant number, since it is smaller than the sum of its proper divisors (1626040).

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

1118240 is a wasteful number, since it uses less digits than its factorization.

1118240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1118240 is about 1057.4686756590. The cubic root of 1118240 is about 103.7954559609.

The spelling of 1118240 in words is "one million, one hundred eighteen thousand, two hundred forty".