11511480 has 32 divisors (see below), whose sum is σ = 34534800. Its totient is φ = 3069696.

The previous prime is 11511469. The next prime is 11511481. The reversal of 11511480 is 8411511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47845 + ... + 48084.

Almost surely, 2^11511480 is an apocalyptic number.

11511480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11511480 is an abundant number, since it is smaller than the sum of its proper divisors (23023320).

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

11511480 is a wasteful number, since it uses less digits than its factorization.

11511480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95943 (or 95939 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 11511480 is about 3392.8572030075. The cubic root of 11511480 is about 225.7929552346.

Adding to 11511480 its reverse (8411511), we get a palindrome (19922991).

The spelling of 11511480 in words is "eleven million, five hundred eleven thousand, four hundred eighty".