1144164 has 48 divisors (see below), whose sum is σ = 3120768. Its totient is φ = 319488.

The previous prime is 1144163. The next prime is 1144183. The reversal of 1144164 is 4614411.

It is a super-2 number, since 2×1144164² = 2618222517792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1144164.

It is not an unprimeable number, because it can be changed into a prime (1144163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4324 + ... + 4580.

It is an arithmetic number, because the mean of its divisors is an integer number (65016).

2^1144164 is an apocalyptic number.

1144164 is a gapful number since it is divisible by the number (14) 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 1144164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560384).

1144164 is an abundant number, since it is smaller than the sum of its proper divisors (1976604).

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

1144164 is a wasteful number, since it uses less digits than its factorization.

1144164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 322 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1144164 is about 1069.6560194754. The cubic root of 1144164 is about 104.5914281162.

Adding to 1144164 its reverse (4614411), we get a palindrome (5758575).

It can be divided in two parts, 114 and 4164, that added together give a triangular number (4278 = T₉₂).

The spelling of 1144164 in words is "one million, one hundred forty-four thousand, one hundred sixty-four".