1138744 has 16 divisors (see below), whose sum is σ = 2152800. Its totient is φ = 564672.

The previous prime is 1138741. The next prime is 1138751. The reversal of 1138744 is 4478311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577 + ... + 1615.

It is an arithmetic number, because the mean of its divisors is an integer number (134550).

2^1138744 is an apocalyptic number.

It is an amenable number.

1138744 is a deficient number, since it is larger than the sum of its proper divisors (1014056).

1138744 is a wasteful number, since it uses less digits than its factorization.

1138744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1178 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 1138744 is about 1067.1194872178. The cubic root of 1138744 is about 104.4260138832.

The spelling of 1138744 in words is "one million, one hundred thirty-eight thousand, seven hundred forty-four".