811950 has 24 divisors (see below), whose sum is σ = 2014008. Its totient is φ = 216480.

The previous prime is 811933. The next prime is 811957. The reversal of 811950 is 59118.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 811950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811957) by changing a digit.

811950 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2557 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (83917).

2⁸¹¹⁹⁵⁰ is an apocalyptic number.

811950 is an abundant number, since it is smaller than the sum of its proper divisors (1202058).

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

811950 is a wasteful number, since it uses less digits than its factorization.

811950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428 (or 5423 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 811950 is about 901.0826821108. The cubic root of 811950 is about 93.2917189766.

The spelling of 811950 in words is "eight hundred eleven thousand, nine hundred fifty".