808885728 has 324 divisors, whose sum is σ = 2827869408. Its totient is φ = 218453760.

The previous prime is 808885711. The next prime is 808885729. The reversal of 808885728 is 827588808.

It is a super-2 number, since 2×808885728² = 1308592241924179968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808885729) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 18811275 + ... + 18811317.

It is an arithmetic number, because the mean of its divisors is an integer number (8727992).

Almost surely, 2^808885728 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 808885728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413934704).

808885728 is an abundant number, since it is smaller than the sum of its proper divisors (2018983680).

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

808885728 is a wasteful number, since it uses less digits than its factorization.

808885728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 54.

The square root of 808885728 is about 28440.9164409307. The cubic root of 808885728 is about 931.7421109188.

The spelling of 808885728 in words is "eight hundred eight million, eight hundred eighty-five thousand, seven hundred twenty-eight".