11987190 has 48 divisors (see below), whose sum is σ = 32327568. Its totient is φ = 3195936.

The previous prime is 11987177. The next prime is 11987191. The reversal of 11987190 is 9178911.

It is a super-2 number, since 2×11987190² = 287385448192200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37 + ... + 4896.

It is an arithmetic number, because the mean of its divisors is an integer number (673491).

Almost surely, 2^11987190 is an apocalyptic number.

11987190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11987190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16163784).

11987190 is an abundant number, since it is smaller than the sum of its proper divisors (20340378).

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

11987190 is an equidigital number, since it uses as much as digits as its factorization.

11987190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955 (or 4943 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 11987190 is about 3462.2521571948. The cubic root of 11987190 is about 228.8613540084.

The spelling of 11987190 in words is "eleven million, nine hundred eighty-seven thousand, one hundred ninety".