11047140 has 72 divisors (see below), whose sum is σ = 36094968. Its totient is φ = 2718720.

The previous prime is 11047139. The next prime is 11047171. The reversal of 11047140 is 4174011.

It can be written as a sum of positive squares in 4 ways, for example, as 236196 + 10810944 = 486^2 + 3288^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21 + ... + 4700.

It is an arithmetic number, because the mean of its divisors is an integer number (501319).

Almost surely, 2^11047140 is an apocalyptic number.

11047140 is a gapful number since it is divisible by the number (10) 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 11047140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18047484).

11047140 is an abundant number, since it is smaller than the sum of its proper divisors (25047828).

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

11047140 is a wasteful number, since it uses less digits than its factorization.

11047140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749 (or 4744 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 11047140 is about 3323.7238152410. The cubic root of 11047140 is about 222.7152485021.

The spelling of 11047140 in words is "eleven million, forty-seven thousand, one hundred forty".