11398656 has 80 divisors (see below), whose sum is σ = 31279248. Its totient is φ = 3686400.

The previous prime is 11398637. The next prime is 11398679. The reversal of 11398656 is 65689311.

Its product of digits (38880) is a multiple of the sum of its prime factors (243).

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, 62886 + ... + 63066.

Almost surely, 2^11398656 is an apocalyptic number.

11398656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11398656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15639624).

11398656 is an abundant number, since it is smaller than the sum of its proper divisors (19880592).

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

11398656 is an equidigital number, since it uses as much as digits as its factorization.

11398656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 227 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 11398656 is about 3376.1895681374. The cubic root of 11398656 is about 225.0528665897.

The spelling of 11398656 in words is "eleven million, three hundred ninety-eight thousand, six hundred fifty-six".