840872088 has 288 divisors, whose sum is σ = 2896508160. Its totient is φ = 215424000.

The previous prime is 840872077. The next prime is 840872093. The reversal of 840872088 is 880278048.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3349963 + ... + 3350213.

It is an arithmetic number, because the mean of its divisors is an integer number (10057320).

Almost surely, 2^840872088 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 840872088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448254080).

840872088 is an abundant number, since it is smaller than the sum of its proper divisors (2055636072).

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

840872088 is a wasteful number, since it uses less digits than its factorization.

840872088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 840872088 is about 28997.7945368264. The cubic root of 840872088 is about 943.8652104542.

The spelling of 840872088 in words is "eight hundred forty million, eight hundred seventy-two thousand, eighty-eight".