11387864 has 8 divisors (see below), whose sum is σ = 21352260. Its totient is φ = 5693928.

The previous prime is 11387863. The next prime is 11387867. The reversal of 11387864 is 46878311.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11387861) by changing a digit.

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 as a sum of consecutive naturals, namely, 711734 + ... + 711749.

Almost surely, 2^11387864 is an apocalyptic number.

It is an amenable number.

11387864 is a deficient number, since it is larger than the sum of its proper divisors (9964396).

11387864 is a wasteful number, since it uses less digits than its factorization.

11387864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423489 (or 1423485 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 11387864 is about 3374.5909381731. The cubic root of 11387864 is about 224.9818191071.

The spelling of 11387864 in words is "eleven million, three hundred eighty-seven thousand, eight hundred sixty-four".