11543812 has 18 divisors (see below), whose sum is σ = 23500302. Its totient is φ = 4947264.

The previous prime is 11543809. The next prime is 11543813. The reversal of 11543812 is 21834511.

It can be written as a sum of positive squares in only one way, i.e., 7918596 + 3625216 = 2814^2 + 1904^2 .

It is not an unprimeable number, because it can be changed into a prime (11543813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29253 + ... + 29644.

Almost surely, 2^11543812 is an apocalyptic number.

It is an amenable number.

11543812 is an abundant number, since it is smaller than the sum of its proper divisors (11956490).

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

11543812 is a wasteful number, since it uses less digits than its factorization.

11543812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58915 (or 58906 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 11543812 is about 3397.6185777688. The cubic root of 11543812 is about 226.0041506012.

The spelling of 11543812 in words is "eleven million, five hundred forty-three thousand, eight hundred twelve".