1121736 has 64 divisors (see below), whose sum is σ = 3502080. Its totient is φ = 290880.

The previous prime is 1121723. The next prime is 1121737. The reversal of 1121736 is 6371211.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121737) 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, 1545 + ... + 2151.

It is an arithmetic number, because the mean of its divisors is an integer number (54720).

2^1121736 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 1121736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751040).

1121736 is an abundant number, since it is smaller than the sum of its proper divisors (2380344).

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

1121736 is a wasteful number, since it uses less digits than its factorization.

1121736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 630 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1121736 is about 1059.1203897575. The cubic root of 1121736 is about 103.9035101111.

Adding to 1121736 its reverse (6371211), we get a palindrome (7492947).

The spelling of 1121736 in words is "one million, one hundred twenty-one thousand, seven hundred thirty-six".