727981888 has 56 divisors (see below), whose sum is σ = 1534436352. Its totient is φ = 341489664.

The previous prime is 727981829. The next prime is 727981909. The reversal of 727981888 is 888189727.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 415831 + ... + 417577.

Almost surely, 2^727981888 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 727981888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767218176).

727981888 is an abundant number, since it is smaller than the sum of its proper divisors (806454464).

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

727981888 is a wasteful number, since it uses less digits than its factorization.

727981888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159 (or 2149 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 58.

The square root of 727981888 is about 26981.1394866859. The cubic root of 727981888 is about 899.5808286713.

The spelling of 727981888 in words is "seven hundred twenty-seven million, nine hundred eighty-one thousand, eight hundred eighty-eight".