1138144 has 24 divisors (see below), whose sum is σ = 2561328. Its totient is φ = 487680.

The previous prime is 1138141. The next prime is 1138147. The reversal of 1138144 is 4418311.

It is an interprime number because it is at equal distance from previous prime (1138141) and next prime (1138147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317 + ... + 2764.

It is an arithmetic number, because the mean of its divisors is an integer number (106722).

2^1138144 is an apocalyptic number.

1138144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1138144 is an abundant number, since it is smaller than the sum of its proper divisors (1423184).

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

1138144 is an equidigital number, since it uses as much as digits as its factorization.

1138144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5098 (or 5090 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 1138144 is about 1066.8383195218. The cubic root of 1138144 is about 104.4076701009.

The spelling of 1138144 in words is "one million, one hundred thirty-eight thousand, one hundred forty-four".