808947648 has 280 divisors, whose sum is σ = 2596408320. Its totient is φ = 248209920.

The previous prime is 808947641. The next prime is 808947661. The reversal of 808947648 is 846749808.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 808947594 and 808947603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808947641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4235233 + ... + 4235423.

Almost surely, 2^808947648 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 808947648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298204160).

808947648 is an abundant number, since it is smaller than the sum of its proper divisors (1787460672).

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

808947648 is a wasteful number, since it uses less digits than its factorization.

808947648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 808947648 is about 28442.0049926161. The cubic root of 808947648 is about 931.7658851873.

The spelling of 808947648 in words is "eight hundred eight million, nine hundred forty-seven thousand, six hundred forty-eight".