840286848 has 64 divisors (see below), whose sum is σ = 2238696000. Its totient is φ = 279257088.

The previous prime is 840286823. The next prime is 840286849. The reversal of 840286848 is 848682048.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 840286797 and 840286806.

It is not an unprimeable number, because it can be changed into a prime (840286849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132453 + ... + 138651.

It is an arithmetic number, because the mean of its divisors is an integer number (34979625).

Almost surely, 2^840286848 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 840286848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119348000).

840286848 is an abundant number, since it is smaller than the sum of its proper divisors (1398409152).

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

840286848 is a wasteful number, since it uses less digits than its factorization.

840286848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569 (or 6557 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 48.

The square root of 840286848 is about 28987.7016681213. The cubic root of 840286848 is about 943.6461855135.

The spelling of 840286848 in words is "eight hundred forty million, two hundred eighty-six thousand, eight hundred forty-eight".