1122744 has 64 divisors (see below), whose sum is σ = 3306240. Its totient is φ = 311040.

The previous prime is 1122739. The next prime is 1122749. The reversal of 1122744 is 4472211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1122739) and next prime (1122749).

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 1122744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122749) 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, 6807 + ... + 6969.

It is an arithmetic number, because the mean of its divisors is an integer number (51660).

2^1122744 is an apocalyptic number.

1122744 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 1122744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653120).

1122744 is an abundant number, since it is smaller than the sum of its proper divisors (2183496).

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

1122744 is a wasteful number, since it uses less digits than its factorization.

1122744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 216 counting only the distinct ones).

The product of its digits is 448, while the sum is 21.

The square root of 1122744 is about 1059.5961494834. The cubic root of 1122744 is about 103.9346236060.

Adding to 1122744 its reverse (4472211), we get a palindrome (5594955).

The spelling of 1122744 in words is "one million, one hundred twenty-two thousand, seven hundred forty-four".