11800240 has 20 divisors (see below), whose sum is σ = 27435744. Its totient is φ = 4720064.

The previous prime is 11800237. The next prime is 11800247. The reversal of 11800240 is 4200811.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

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

It is not an unprimeable number, because it can be changed into a prime (11800247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73672 + ... + 73831.

Almost surely, 2^11800240 is an apocalyptic number.

11800240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11800240 is an abundant number, since it is smaller than the sum of its proper divisors (15635504).

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

11800240 is a wasteful number, since it uses less digits than its factorization.

11800240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147516 (or 147510 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 11800240 is about 3435.1477406365. The cubic root of 11800240 is about 227.6653549693.

The spelling of 11800240 in words is "eleven million, eight hundred thousand, two hundred forty".