840888256 has 28 divisors (see below), whose sum is σ = 1796996152. Its totient is φ = 388101888.

The previous prime is 840888203. The next prime is 840888259. The reversal of 840888256 is 652888048.

It is a super-3 number, since 3×840888256³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840888259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504510 + ... + 506173.

It is an arithmetic number, because the mean of its divisors is an integer number (64178434).

Almost surely, 2^840888256 is an apocalyptic number.

It is an amenable number.

840888256 is an abundant number, since it is smaller than the sum of its proper divisors (956107896).

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

840888256 is a wasteful number, since it uses less digits than its factorization.

840888256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010708 (or 1010698 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 49.

The square root of 840888256 is about 28998.0733153084. The cubic root of 840888256 is about 943.8712598543.

The spelling of 840888256 in words is "eight hundred forty million, eight hundred eighty-eight thousand, two hundred fifty-six".