1185540 has 24 divisors (see below), whose sum is σ = 3319680. Its totient is φ = 316128.

The previous prime is 1185523. The next prime is 1185551. The reversal of 1185540 is 455811.

It is a self number, because there is not a number n which added to its sum of digits gives 1185540.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9820 + ... + 9939.

It is an arithmetic number, because the mean of its divisors is an integer number (138320).

2^1185540 is an apocalyptic number.

1185540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1185540 is an abundant number, since it is smaller than the sum of its proper divisors (2134140).

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

1185540 is a wasteful number, since it uses less digits than its factorization.

1185540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19771 (or 19769 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1185540 is about 1088.8250548183. The cubic root of 1185540 is about 105.8372963706.

The spelling of 1185540 in words is "one million, one hundred eighty-five thousand, five hundred forty".