1185144 has 64 divisors (see below), whose sum is σ = 3283200. Its totient is φ = 354816.

The previous prime is 1185131. The next prime is 1185179. The reversal of 1185144 is 4415811.

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

Its product of digits (640) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10432 + ... + 10544.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2^1185144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1185144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641600).

1185144 is an abundant number, since it is smaller than the sum of its proper divisors (2098056).

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

1185144 is a wasteful number, since it uses less digits than its factorization.

1185144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 160 counting only the distinct ones).

The product of its digits is 640, while the sum is 24.

The square root of 1185144 is about 1088.6431922352. The cubic root of 1185144 is about 105.8255109573.

The spelling of 1185144 in words is "one million, one hundred eighty-five thousand, one hundred forty-four".