840196 has 24 divisors (see below), whose sum is σ = 1727936. Its totient is φ = 349920.

The previous prime is 840187. The next prime is 840197. The reversal of 840196 is 691048.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (840197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631 + ... + 1441.

2⁸⁴⁰¹⁹⁶ 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 840196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863968).

840196 is an abundant number, since it is smaller than the sum of its proper divisors (887740).

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

840196 is a wasteful number, since it uses less digits than its factorization.

840196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 840196 is about 916.6220595207. The cubic root of 840196 is about 94.3612176707.

It can be divided in two parts, 8 and 40196, that added together give a palindrome (40204).

The spelling of 840196 in words is "eight hundred forty thousand, one hundred ninety-six".