728126587 has 8 divisors (see below), whose sum is σ = 739466000. Its totient is φ = 716801184.

The previous prime is 728126557. The next prime is 728126591. The reversal of 728126587 is 785621827.

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

It is a cyclic number.

It is not a de Polignac number, because 728126587 - 2⁷ = 728126459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728126527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157789 + ... + 162337.

It is an arithmetic number, because the mean of its divisors is an integer number (92433250).

Almost surely, 2^728126587 is an apocalyptic number.

728126587 is a deficient number, since it is larger than the sum of its proper divisors (11339413).

728126587 is a wasteful number, since it uses less digits than its factorization.

728126587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7005.

The product of its digits is 376320, while the sum is 46.

The square root of 728126587 is about 26983.8208376798. The cubic root of 728126587 is about 899.6404271425.

The spelling of 728126587 in words is "seven hundred twenty-eight million, one hundred twenty-six thousand, five hundred eighty-seven".