11818572 has 12 divisors (see below), whose sum is σ = 27576696. Its totient is φ = 3939520.

The previous prime is 11818571. The next prime is 11818591. The reversal of 11818572 is 27581811.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (11818571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492429 + ... + 492452.

It is an arithmetic number, because the mean of its divisors is an integer number (2298058).

Almost surely, 2^11818572 is an apocalyptic number.

11818572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11818572 is an abundant number, since it is smaller than the sum of its proper divisors (15758124).

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

11818572 is a wasteful number, since it uses less digits than its factorization.

11818572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984888 (or 984886 counting only the distinct ones).

The product of its digits is 4480, while the sum is 33.

The square root of 11818572 is about 3437.8150037487. The cubic root of 11818572 is about 227.7831887846.

The spelling of 11818572 in words is "eleven million, eight hundred eighteen thousand, five hundred seventy-two".