11509048 has 16 divisors (see below), whose sum is σ = 21615480. Its totient is φ = 5744928.

The previous prime is 11509037. The next prime is 11509049. The reversal of 11509048 is 84090511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11509049) 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, 8686 + ... + 9922.

Almost surely, 2^11509048 is an apocalyptic number.

It is an amenable number.

11509048 is a deficient number, since it is larger than the sum of its proper divisors (10106432).

11509048 is a wasteful number, since it uses less digits than its factorization.

11509048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 11509048 is about 3392.4987840823. The cubic root of 11509048 is about 225.7770532208. Note that the first 3 decimals are identical.

Adding to 11509048 its reverse (84090511), we get a palindrome (95599559).

The spelling of 11509048 in words is "eleven million, five hundred nine thousand, forty-eight".