11197800 has 72 divisors (see below), whose sum is σ = 37611990. Its totient is φ = 2985600.

The previous prime is 11197793. The next prime is 11197801. The reversal of 11197800 is 879111.

It can be written as a sum of positive squares in 3 ways, for example, as 5116644 + 6081156 = 2262^2 + 2466^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (11197801) 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 17 ways as a sum of consecutive naturals, for example, 1311 + ... + 4910.

Almost surely, 2^11197800 is an apocalyptic number.

11197800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11197800 is an abundant number, since it is smaller than the sum of its proper divisors (26414190).

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

11197800 is a wasteful number, since it uses less digits than its factorization.

11197800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6243 (or 6231 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 11197800 is about 3346.3114021262. The cubic root of 11197800 is about 223.7231379589.

The spelling of 11197800 in words is "eleven million, one hundred ninety-seven thousand, eight hundred".