11280240 has 60 divisors (see below), whose sum is σ = 37885224. Its totient is φ = 3007872.

The previous prime is 11280239. The next prime is 11280253. The reversal of 11280240 is 4208211.

11280240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7114 + ... + 8553.

Almost surely, 2^11280240 is an apocalyptic number.

11280240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11280240 is an abundant number, since it is smaller than the sum of its proper divisors (26604984).

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

11280240 is a wasteful number, since it uses less digits than its factorization.

11280240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15686 (or 15677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 11280240 is about 3358.6068540393. The cubic root of 11280240 is about 224.2708246415.

Adding to 11280240 its reverse (4208211), we get a palindrome (15488451).

The spelling of 11280240 in words is "eleven million, two hundred eighty thousand, two hundred forty".