1118520 has 96 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 274176.

The previous prime is 1118519. The next prime is 1118527. The reversal of 1118520 is 258111.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1118493 and 1118502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4561 + ... + 4799.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2^1118520 is an apocalyptic number.

1118520 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 1118520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965600).

1118520 is an abundant number, since it is smaller than the sum of its proper divisors (2812680).

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

1118520 is a wasteful number, since it uses less digits than its factorization.

1118520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1118520 is about 1057.6010590010. The cubic root of 1118520 is about 103.8041184729.

The spelling of 1118520 in words is "one million, one hundred eighteen thousand, five hundred twenty".