11971850 has 24 divisors (see below), whose sum is σ = 24293088. Its totient is φ = 4353200.

The previous prime is 11971829. The next prime is 11971853. The reversal of 11971850 is 5817911.

11971850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11971853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10334 + ... + 11433.

It is an arithmetic number, because the mean of its divisors is an integer number (1012212).

Almost surely, 2^11971850 is an apocalyptic number.

11971850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11971850 is an abundant number, since it is smaller than the sum of its proper divisors (12321238).

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

11971850 is a wasteful number, since it uses less digits than its factorization.

11971850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21790 (or 21785 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 11971850 is about 3460.0361269790. The cubic root of 11971850 is about 228.7636877553.

It can be divided in two parts, 11971 and 850, that added together give a palindrome (12821).

The spelling of 11971850 in words is "eleven million, nine hundred seventy-one thousand, eight hundred fifty".