11513012 has 72 divisors (see below), whose sum is σ = 26115264. Its totient is φ = 4333824.

The previous prime is 11513009. The next prime is 11513017. The reversal of 11513012 is 21031511.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171803 + ... + 171869.

It is an arithmetic number, because the mean of its divisors is an integer number (362712).

Almost surely, 2^11513012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11513012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13057632).

11513012 is an abundant number, since it is smaller than the sum of its proper divisors (14602252).

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

11513012 is a wasteful number, since it uses less digits than its factorization.

11513012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11513012 is about 3393.0829639135. The cubic root of 11513012 is about 225.8029713073.

Adding to 11513012 its reverse (21031511), we get a palindrome (32544523).

The spelling of 11513012 in words is "eleven million, five hundred thirteen thousand, twelve".