851950 has 24 divisors (see below), whose sum is σ = 1729800. Its totient is φ = 309600.

The previous prime is 851899. The next prime is 851953. The reversal of 851950 is 59158.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851953) by changing a digit.

851950 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (72075).

2⁸⁵¹⁹⁵⁰ is an apocalyptic number.

851950 is an abundant number, since it is smaller than the sum of its proper divisors (877850).

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

851950 is a wasteful number, since it uses less digits than its factorization.

851950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 851950 is about 923.0113758779. The cubic root of 851950 is about 94.7992065545.

The spelling of 851950 in words is "eight hundred fifty-one thousand, nine hundred fifty".