4481587728 has 60 divisors (see below), whose sum is σ = 12552457008. Its totient is φ = 1492643520.

The previous prime is 4481587657. The next prime is 4481587729. The reversal of 4481587728 is 8277851844.

It is not an unprimeable number, because it can be changed into a prime (4481587729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173851 + ... + 197957.

Almost surely, 2^4481587728 is an apocalyptic number.

4481587728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4481587728 is an abundant number, since it is smaller than the sum of its proper divisors (8070869280).

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

4481587728 is a wasteful number, since it uses less digits than its factorization.

4481587728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25412 (or 25403 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 54.

The square root of 4481587728 is about 66944.6616841104. The cubic root of 4481587728 is about 1648.7088433522.

The spelling of 4481587728 in words is "four billion, four hundred eighty-one million, five hundred eighty-seven thousand, seven hundred twenty-eight".