11813788 has 24 divisors (see below), whose sum is σ = 24444000. Its totient is φ = 4888128.

The previous prime is 11813741. The next prime is 11813797. The reversal of 11813788 is 88731811.

It is a congruent number.

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, 6463 + ... + 8086.

It is an arithmetic number, because the mean of its divisors is an integer number (1018500).

Almost surely, 2^11813788 is an apocalyptic number.

It is an amenable number.

11813788 is an abundant number, since it is smaller than the sum of its proper divisors (12630212).

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

11813788 is a wasteful number, since it uses less digits than its factorization.

11813788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14589 (or 14587 counting only the distinct ones).

The product of its digits is 10752, while the sum is 37.

The square root of 11813788 is about 3437.1191425378. The cubic root of 11813788 is about 227.7524501064.

The spelling of 11813788 in words is "eleven million, eight hundred thirteen thousand, seven hundred eighty-eight".