11197888 has 56 divisors (see below), whose sum is σ = 24564848. Its totient is φ = 5031936.

The previous prime is 11197877. The next prime is 11197889. The reversal of 11197888 is 88879111.

11197888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35620 + ... + 35932.

It is an arithmetic number, because the mean of its divisors is an integer number (438658).

Almost surely, 2^11197888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11197888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12282424).

11197888 is an abundant number, since it is smaller than the sum of its proper divisors (13366960).

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

11197888 is a wasteful number, since it uses less digits than its factorization.

11197888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 371 counting only the distinct ones).

The product of its digits is 32256, while the sum is 43.

The square root of 11197888 is about 3346.3245509066. The cubic root of 11197888 is about 223.7237240141.

The spelling of 11197888 in words is "eleven million, one hundred ninety-seven thousand, eight hundred eighty-eight".