2808481428 has 144 divisors (see below), whose sum is σ = 7687680000. Its totient is φ = 861689664.

The previous prime is 2808481393. The next prime is 2808481433. The reversal of 2808481428 is 8241848082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6397233 + ... + 6397671.

Almost surely, 2^2808481428 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 2808481428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3843840000).

2808481428 is an abundant number, since it is smaller than the sum of its proper divisors (4879198572).

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

2808481428 is a wasteful number, since it uses less digits than its factorization.

2808481428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 45.

The square root of 2808481428 is about 52995.1075855121. The cubic root of 2808481428 is about 1410.8814346886.

The spelling of 2808481428 in words is "two billion, eight hundred eight million, four hundred eighty-one thousand, four hundred twenty-eight".