11818040 has 32 divisors (see below), whose sum is σ = 28637280. Its totient is φ = 4363392.

The previous prime is 11818007. The next prime is 11818049. The reversal of 11818040 is 4081811.

It is a junction number, because it is equal to n+sod(n) for n = 11817997 and 11818015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11818049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10844 + ... + 11883.

It is an arithmetic number, because the mean of its divisors is an integer number (894915).

Almost surely, 2^11818040 is an apocalyptic number.

11818040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11818040 is an abundant number, since it is smaller than the sum of its proper divisors (16819240).

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

11818040 is a wasteful number, since it uses less digits than its factorization.

11818040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22751 (or 22747 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 11818040 is about 3437.7376281502. The cubic root of 11818040 is about 227.7797709302.

Adding to 11818040 its reverse (4081811), we get a palindrome (15899851).

The spelling of 11818040 in words is "eleven million, eight hundred eighteen thousand, forty".