4581144 has 64 divisors (see below), whose sum is σ = 12902400. Its totient is φ = 1505952.

The previous prime is 4581139. The next prime is 4581151. The reversal of 4581144 is 4411854.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27349 + ... + 27515.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

Almost surely, 2^4581144 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 4581144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6451200).

4581144 is an abundant number, since it is smaller than the sum of its proper divisors (8321256).

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

4581144 is a wasteful number, since it uses less digits than its factorization.

4581144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 299 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 4581144 is about 2140.3607172624. The cubic root of 4581144 is about 166.0827960704.

Adding to 4581144 its reverse (4411854), we get a palindrome (8992998).

The spelling of 4581144 in words is "four million, five hundred eighty-one thousand, one hundred forty-four".