11240728 has 16 divisors (see below), whose sum is σ = 21138480. Its totient is φ = 5603808.

The previous prime is 11240707. The next prime is 11240743. The reversal of 11240728 is 82704211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101 + ... + 4867.

It is an arithmetic number, because the mean of its divisors is an integer number (1321155).

Almost surely, 2^11240728 is an apocalyptic number.

It is an amenable number.

11240728 is a deficient number, since it is larger than the sum of its proper divisors (9897752).

11240728 is a wasteful number, since it uses less digits than its factorization.

11240728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146 (or 4142 counting only the distinct ones).

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

The square root of 11240728 is about 3352.7194931876. The cubic root of 11240728 is about 224.0086625051.

Adding to 11240728 its reverse (82704211), we get a palindrome (93944939).

The spelling of 11240728 in words is "eleven million, two hundred forty thousand, seven hundred twenty-eight".