728099765 has 8 divisors (see below), whose sum is σ = 876945408. Its totient is φ = 580329360.

The previous prime is 728099731. The next prime is 728099791. The reversal of 728099765 is 567990827.

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

It is a de Polignac number, because none of the positive numbers 2^k-728099765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 267317 + ... + 270026.

It is an arithmetic number, because the mean of its divisors is an integer number (109618176).

Almost surely, 2^728099765 is an apocalyptic number.

It is an amenable number.

728099765 is a deficient number, since it is larger than the sum of its proper divisors (148845643).

728099765 is a wasteful number, since it uses less digits than its factorization.

728099765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537619.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 728099765 is about 26983.3238315816. The cubic root of 728099765 is about 899.6293803217.

The spelling of 728099765 in words is "seven hundred twenty-eight million, ninety-nine thousand, seven hundred sixty-five".