11724280 has 16 divisors (see below), whose sum is σ = 26379720. Its totient is φ = 4689696.

The previous prime is 11724253. The next prime is 11724281. The reversal of 11724280 is 8242711.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11724281) 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, 146514 + ... + 146593.

Almost surely, 2^11724280 is an apocalyptic number.

11724280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11724280 is an abundant number, since it is smaller than the sum of its proper divisors (14655440).

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

11724280 is a wasteful number, since it uses less digits than its factorization.

11724280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293118 (or 293114 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 11724280 is about 3424.0735973399. The cubic root of 11724280 is about 227.1757971144.

Adding to 11724280 its reverse (8242711), we get a palindrome (19966991).

The spelling of 11724280 in words is "eleven million, seven hundred twenty-four thousand, two hundred eighty".