11197680 has 160 divisors (see below), whose sum is σ = 38789184. Its totient is φ = 2654208.

The previous prime is 11197661. The next prime is 11197687. The reversal of 11197680 is 8679111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197687) 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 in 31 ways as a sum of consecutive naturals, for example, 115392 + ... + 115488.

Almost surely, 2^11197680 is an apocalyptic number.

11197680 is a gapful number since it is divisible by the number (10) 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 11197680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19394592).

11197680 is an abundant number, since it is smaller than the sum of its proper divisors (27591504).

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

11197680 is a wasteful number, since it uses less digits than its factorization.

11197680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 11197680 is about 3346.2934718880. The cubic root of 11197680 is about 223.7223387879.

Subtracting from 11197680 its reverse (8679111), we obtain a square (2518569 = 1587²).

The spelling of 11197680 in words is "eleven million, one hundred ninety-seven thousand, six hundred eighty".