11044002400 has 144 divisors (see below), whose sum is σ = 28611981216. Its totient is φ = 4148305920.

The previous prime is 11044002373. The next prime is 11044002427. The reversal of 11044002400 is 420044011.

It is an interprime number because it is at equal distance from previous prime (11044002373) and next prime (11044002427).

It is a super-2 number, since 2×11044002400² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 9886642 + ... + 9887758.

It is an arithmetic number, because the mean of its divisors is an integer number (198694314).

Almost surely, 2^11044002400 is an apocalyptic number.

11044002400 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 11044002400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14305990608).

11044002400 is an abundant number, since it is smaller than the sum of its proper divisors (17567978816).

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

11044002400 is a wasteful number, since it uses less digits than its factorization.

11044002400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1868 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 11044002400 its reverse (420044011), we get a palindrome (11464046411).

The spelling of 11044002400 in words is "eleven billion, forty-four million, two thousand, four hundred".