819896 has 40 divisors (see below), whose sum is σ = 1932600. Its totient is φ = 319440.

The previous prime is 819853. The next prime is 819899. The reversal of 819896 is 698918.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819899) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74531 + ... + 74541.

It is an arithmetic number, because the mean of its divisors is an integer number (48315).

2⁸¹⁹⁸⁹⁶ 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 819896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (966300).

819896 is an abundant number, since it is smaller than the sum of its proper divisors (1112704).

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

819896 is an equidigital number, since it uses as much as digits as its factorization.

819896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 20 counting only the distinct ones).

The product of its digits is 31104, while the sum is 41.

The square root of 819896 is about 905.4810875993. The cubic root of 819896 is about 93.5950590325.

The spelling of 819896 in words is "eight hundred nineteen thousand, eight hundred ninety-six".