11217864 has 48 divisors (see below), whose sum is σ = 32626800. Its totient is φ = 3204768.

The previous prime is 11217853. The next prime is 11217881. The reversal of 11217864 is 46871211.

11217864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3594 + ... + 5945.

It is an arithmetic number, because the mean of its divisors is an integer number (679725).

Almost surely, 2^11217864 is an apocalyptic number.

11217864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11217864 is an abundant number, since it is smaller than the sum of its proper divisors (21408936).

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

11217864 is a wasteful number, since it uses less digits than its factorization.

11217864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9562 (or 9551 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 11217864 is about 3349.3079882268. The cubic root of 11217864 is about 223.8566791526.

The spelling of 11217864 in words is "eleven million, two hundred seventeen thousand, eight hundred sixty-four".