1188540 has 96 divisors (see below), whose sum is σ = 3870720. Its totient is φ = 302400.

The previous prime is 1188529. The next prime is 1188553. The reversal of 1188540 is 458811.

1188540 is a `hidden beast` number, since 118 + 8 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16705 + ... + 16775.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2^1188540 is an apocalyptic number.

1188540 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 1188540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1935360).

1188540 is an abundant number, since it is smaller than the sum of its proper divisors (2682180).

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

1188540 is a wasteful number, since it uses less digits than its factorization.

1188540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 1188540 is about 1090.2018161790. The cubic root of 1188540 is about 105.9264946669.

It can be divided in two parts, 1188 and 540, that added together give a cube (1728 = 12³).

The spelling of 1188540 in words is "one million, one hundred eighty-eight thousand, five hundred forty".