11851950 has 72 divisors (see below), whose sum is σ = 32357304. Its totient is φ = 2868800.

The previous prime is 11851949. The next prime is 11851967. The reversal of 11851950 is 5915811.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17824 + ... + 18476.

It is an arithmetic number, because the mean of its divisors is an integer number (449407).

Almost surely, 2^11851950 is an apocalyptic number.

11851950 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 11851950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16178652).

11851950 is an abundant number, since it is smaller than the sum of its proper divisors (20505354).

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

11851950 is a wasteful number, since it uses less digits than its factorization.

11851950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 30.

The square root of 11851950 is about 3442.6661179963. Note that the first 3 decimals coincide. The cubic root of 11851950 is about 227.9974222546.

The spelling of 11851950 in words is "eleven million, eight hundred fifty-one thousand, nine hundred fifty".