11813860 has 24 divisors (see below), whose sum is σ = 25091640. Its totient is φ = 4671744.

The previous prime is 11813849. The next prime is 11813887. The reversal of 11813860 is 6831811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 362404 + 11451456 = 602^2 + 3384^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1539 + ... + 5098.

It is an arithmetic number, because the mean of its divisors is an integer number (1045485).

Almost surely, 2^11813860 is an apocalyptic number.

11813860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11813860 is an abundant number, since it is smaller than the sum of its proper divisors (13277780).

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

11813860 is a wasteful number, since it uses less digits than its factorization.

11813860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735 (or 6733 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 11813860 is about 3437.1296164096. The cubic root of 11813860 is about 227.7529127902.

It can be divided in two parts, 1181 and 3860, that added together give a square (5041 = 71²).

The spelling of 11813860 in words is "eleven million, eight hundred thirteen thousand, eight hundred sixty".