191828 has 48 divisors (see below), whose sum is σ = 451584. Its totient is φ = 69120.

The previous prime is 191827. The next prime is 191831. The reversal of 191828 is 828191.

Its product of digits (1152) is a multiple of the sum of its prime factors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 191828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6173 + ... + 6203.

It is an arithmetic number, because the mean of its divisors is an integer number (9408).

2¹⁹¹⁸²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225792).

191828 is an abundant number, since it is smaller than the sum of its proper divisors (259756).

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

191828 is a wasteful number, since it uses less digits than its factorization.

191828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 70 counting only the distinct ones).

The product of its digits is 1152, while the sum is 29.

The square root of 191828 is about 437.9817347790. The cubic root of 191828 is about 57.6727507957.

The spelling of 191828 in words is "one hundred ninety-one thousand, eight hundred twenty-eight".