1182240 has 72 divisors (see below), whose sum is σ = 4039308. Its totient is φ = 314880.

The previous prime is 1182211. The next prime is 1182253. The reversal of 1182240 is 422811.

It can be written as a sum of positive squares in 2 ways, for example, as 1140624 + 41616 = 1068^2 + 204^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

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, 1030 + ... + 1850.

2^1182240 is an apocalyptic number.

1182240 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 1182240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019654).

1182240 is an abundant number, since it is smaller than the sum of its proper divisors (2857068).

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

1182240 is a wasteful number, since it uses less digits than its factorization.

1182240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1182240 is about 1087.3086038471. The cubic root of 1182240 is about 105.7390042723.

The spelling of 1182240 in words is "one million, one hundred eighty-two thousand, two hundred forty".