11801850 has 96 divisors (see below), whose sum is σ = 31872960. Its totient is φ = 2880000.

The previous prime is 11801827. The next prime is 11801861. The reversal of 11801850 is 5810811.

11801850 is digitally balanced in base 2 and base 4, because in such bases 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 11801850.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116800 + ... + 116900.

It is an arithmetic number, because the mean of its divisors is an integer number (332010).

Almost surely, 2^11801850 is an apocalyptic number.

11801850 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 11801850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15936480).

11801850 is an abundant number, since it is smaller than the sum of its proper divisors (20071110).

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

11801850 is a wasteful number, since it uses less digits than its factorization.

11801850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 11801850 is about 3435.3820748208. The cubic root of 11801850 is about 227.6757085596.

The spelling of 11801850 in words is "eleven million, eight hundred one thousand, eight hundred fifty".