1129744 has 60 divisors (see below), whose sum is σ = 2798928. Its totient is φ = 436800.

The previous prime is 1129741. The next prime is 1129747. The reversal of 1129744 is 4479211.

It is an interprime number because it is at equal distance from previous prime (1129741) and next prime (1129747).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1129741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8559 + ... + 8689.

2^1129744 is an apocalyptic number.

1129744 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 1129744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399464).

1129744 is an abundant number, since it is smaller than the sum of its proper divisors (1669184).

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

1129744 is a wasteful number, since it uses less digits than its factorization.

1129744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 151 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1129744 is about 1062.8941621817. The cubic root of 1129744 is about 104.1501775144.

Adding to 1129744 its product of digits (2016), we get a triangular number (1131760 = T₁₅₀₄).

It can be divided in two parts, 11 and 29744, that multiplied together give a square (327184 = 572²).

The spelling of 1129744 in words is "one million, one hundred twenty-nine thousand, seven hundred forty-four".