728098681 has 16 divisors (see below), whose sum is σ = 752025600. Its totient is φ = 704667600.

The previous prime is 728098633. The next prime is 728098697. The reversal of 728098681 is 186890827.

It is a cyclic number.

It is not a de Polignac number, because 728098681 - 2⁹ = 728098169 is a prime.

It is a super-2 number, since 2×728098681² = 1060255378547879522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728098081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1519800 + ... + 1520278.

It is an arithmetic number, because the mean of its divisors is an integer number (47001600).

Almost surely, 2^728098681 is an apocalyptic number.

728098681 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

728098681 is a deficient number, since it is larger than the sum of its proper divisors (23926919).

728098681 is a wasteful number, since it uses less digits than its factorization.

728098681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 728098681 is about 26983.3037450939. The cubic root of 728098681 is about 899.6289338633.

The spelling of 728098681 in words is "seven hundred twenty-eight million, ninety-eight thousand, six hundred eighty-one".