11812388 has 24 divisors (see below), whose sum is σ = 23725632. Its totient is φ = 5040864.

The previous prime is 11812379. The next prime is 11812403. The reversal of 11812388 is 88321811.

It is a happy 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, 6995 + ... + 8517.

It is an arithmetic number, because the mean of its divisors is an integer number (988568).

Almost surely, 2^11812388 is an apocalyptic number.

It is an amenable number.

11812388 is an abundant number, since it is smaller than the sum of its proper divisors (11913244).

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

11812388 is a wasteful number, since it uses less digits than its factorization.

11812388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811 (or 1809 counting only the distinct ones).

The product of its digits is 3072, while the sum is 32.

The square root of 11812388 is about 3436.9154775758. The cubic root of 11812388 is about 227.7434531043.

The spelling of 11812388 in words is "eleven million, eight hundred twelve thousand, three hundred eighty-eight".