11913788 has 24 divisors (see below), whose sum is σ = 21394464. Its totient is φ = 5803200.

The previous prime is 11913773. The next prime is 11913791. The reversal of 11913788 is 88731911.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38153 + ... + 38463.

It is an arithmetic number, because the mean of its divisors is an integer number (891436).

Almost surely, 2^11913788 is an apocalyptic number.

It is an amenable number.

11913788 is a deficient number, since it is larger than the sum of its proper divisors (9480676).

11913788 is a wasteful number, since it uses less digits than its factorization.

11913788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 531 counting only the distinct ones).

The product of its digits is 12096, while the sum is 38.

The square root of 11913788 is about 3451.6355543423. The cubic root of 11913788 is about 228.3932630207.

The spelling of 11913788 in words is "eleven million, nine hundred thirteen thousand, seven hundred eighty-eight".