11388456 has 48 divisors (see below), whose sum is σ = 31361460. Its totient is φ = 3732480.

The previous prime is 11388451. The next prime is 11388463. The reversal of 11388456 is 65488311.

It can be written as a sum of positive squares in 2 ways, for example, as 10692900 + 695556 = 3270^2 + 834^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11388456.

It is not an unprimeable number, because it can be changed into a prime (11388451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3096 + ... + 5688.

Almost surely, 2^11388456 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 11388456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15680730).

11388456 is an abundant number, since it is smaller than the sum of its proper divisors (19973004).

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

11388456 is a wasteful number, since it uses less digits than its factorization.

11388456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2659 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 11388456 is about 3374.6786513682. The cubic root of 11388456 is about 224.9857176119.

The spelling of 11388456 in words is "eleven million, three hundred eighty-eight thousand, four hundred fifty-six".