1158144 has 88 divisors (see below), whose sum is σ = 3438960. Its totient is φ = 344064.

The previous prime is 1158139. The next prime is 1158161. The reversal of 1158144 is 4418511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39922 + ... + 39950.

2^1158144 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 1158144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719480).

1158144 is an abundant number, since it is smaller than the sum of its proper divisors (2280816).

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

1158144 is a wasteful number, since it uses less digits than its factorization.

1158144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 47 counting only the distinct ones).

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

The square root of 1158144 is about 1076.1709901312. The cubic root of 1158144 is about 105.0156892655.

The spelling of 1158144 in words is "one million, one hundred fifty-eight thousand, one hundred forty-four".