1188240 has 40 divisors (see below), whose sum is σ = 3684288. Its totient is φ = 316800.

The previous prime is 1188233. The next prime is 1188247. The reversal of 1188240 is 428811.

It is an interprime number because it is at equal distance from previous prime (1188233) and next prime (1188247).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1188240.

It is not an unprimeable number, because it can be changed into a prime (1188247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236 + ... + 2715.

2^1188240 is an apocalyptic number.

1188240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1188240 is an abundant number, since it is smaller than the sum of its proper divisors (2496048).

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

1188240 is a wasteful number, since it uses less digits than its factorization.

1188240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967 (or 4961 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1188240 is about 1090.0642182917. The cubic root of 1188240 is about 105.9175815964.

The spelling of 1188240 in words is "one million, one hundred eighty-eight thousand, two hundred forty".