11721150 has 108 divisors (see below), whose sum is σ = 36589176. Its totient is φ = 2635200.

The previous prime is 11721139. The next prime is 11721163. The reversal of 11721150 is 5112711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 192120 + ... + 192180.

Almost surely, 2^11721150 is an apocalyptic number.

11721150 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 11721150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18294588).

11721150 is an abundant number, since it is smaller than the sum of its proper divisors (24868026).

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

11721150 is a wasteful number, since it uses less digits than its factorization.

11721150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 11721150 is about 3423.6165088982. The cubic root of 11721150 is about 227.1555791413.

Adding to 11721150 its reverse (5112711), we get a palindrome (16833861).

The spelling of 11721150 in words is "eleven million, seven hundred twenty-one thousand, one hundred fifty".