11545812 has 36 divisors (see below), whose sum is σ = 29410836. Its totient is φ = 3818880.

The previous prime is 11545789. The next prime is 11545817. The reversal of 11545812 is 21854511.

It can be written as a sum of positive squares in 2 ways, for example, as 7160976 + 4384836 = 2676^2 + 2094^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11545817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3762 + ... + 6102.

Almost surely, 2^11545812 is an apocalyptic number.

11545812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11545812 is an abundant number, since it is smaller than the sum of its proper divisors (17865024).

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

11545812 is a wasteful number, since it uses less digits than its factorization.

11545812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488 (or 2483 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 11545812 is about 3397.9128888187. The cubic root of 11545812 is about 226.0172018128.

The spelling of 11545812 in words is "eleven million, five hundred forty-five thousand, eight hundred twelve".