727998 has 8 divisors (see below), whose sum is σ = 1456008. Its totient is φ = 242664.

The previous prime is 727997. The next prime is 728003. The reversal of 727998 is 899727.

It is a sphenic number, since it is the product of 3 distinct primes.

727998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727997) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 60661 + ... + 60672.

It is an arithmetic number, because the mean of its divisors is an integer number (182001).

2⁷²⁷⁹⁹⁸ is an apocalyptic number.

727998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

727998 is a wasteful number, since it uses less digits than its factorization.

727998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121338.

The product of its digits is 63504, while the sum is 42.

The square root of 727998 is about 853.2279882892. The cubic root of 727998 is about 89.9587465256.

The spelling of 727998 in words is "seven hundred twenty-seven thousand, nine hundred ninety-eight".