1147744 has 48 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 506880.

The previous prime is 1147739. The next prime is 1147759. The reversal of 1147744 is 4477411.

It is a d-powerful number, because it can be written as 1 + 1 + 4² + 7⁵ + 7⁵ + 4⁸ + 4¹⁰ .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12852 + ... + 12940.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2^1147744 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 1147744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

1147744 is an abundant number, since it is smaller than the sum of its proper divisors (1392416).

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

1147744 is a wasteful number, since it uses less digits than its factorization.

1147744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 135 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 1147744 is about 1071.3281476747. The cubic root of 1147744 is about 104.7004006824.

It can be divided in two parts, 1147 and 744, that added together give a triangular number (1891 = T₆₁).

The spelling of 1147744 in words is "one million, one hundred forty-seven thousand, seven hundred forty-four".