11040138 has 40 divisors (see below), whose sum is σ = 25822368. Its totient is φ = 3518856.

The previous prime is 11040131. The next prime is 11040151. The reversal of 11040138 is 83104011.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11040138.

It is not an unprimeable number, because it can be changed into a prime (11040131) 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 19 ways as a sum of consecutive naturals, for example, 2245 + ... + 5207.

Almost surely, 2^11040138 is an apocalyptic number.

11040138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11040138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12911184).

11040138 is an abundant number, since it is smaller than the sum of its proper divisors (14782230).

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

11040138 is a wasteful number, since it uses less digits than its factorization.

11040138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000 (or 2991 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 11040138 is about 3322.6703116620. The cubic root of 11040138 is about 222.6681840806.

Adding to 11040138 its reverse (83104011), we get a palindrome (94144149).

The spelling of 11040138 in words is "eleven million, forty thousand, one hundred thirty-eight".