11897180 has 36 divisors (see below), whose sum is σ = 25857720. Its totient is φ = 4597920.

The previous prime is 11897143. The next prime is 11897191. The reversal of 11897180 is 8179811.

11897180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11897180.

It is a congruent number.

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, 18911 + ... + 19529.

It is an arithmetic number, because the mean of its divisors is an integer number (718270).

Almost surely, 2^11897180 is an apocalyptic number.

11897180 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 11897180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12928860).

11897180 is an abundant number, since it is smaller than the sum of its proper divisors (13960540).

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

11897180 is a wasteful number, since it uses less digits than its factorization.

11897180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 35.

The square root of 11897180 is about 3449.2288993339. The cubic root of 11897180 is about 228.2870857845.

The spelling of 11897180 in words is "eleven million, eight hundred ninety-seven thousand, one hundred eighty".