728724895 has 8 divisors (see below), whose sum is σ = 893075904. Its totient is φ = 570575904.

The previous prime is 728724881. The next prime is 728724947. The reversal of 728724895 is 598427827.

It is a happy number.

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 728724895 - 2¹¹ = 728722847 is a prime.

It is a super-2 number, since 2×728724895² = 1062079945185522050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550244 + ... + 1550713.

It is an arithmetic number, because the mean of its divisors is an integer number (111634488).

Almost surely, 2^728724895 is an apocalyptic number.

728724895 is a deficient number, since it is larger than the sum of its proper divisors (164351009).

728724895 is a wasteful number, since it uses less digits than its factorization.

728724895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101009.

The product of its digits is 2257920, while the sum is 52.

The square root of 728724895 is about 26994.9049822369. The cubic root of 728724895 is about 899.8867738218.

The spelling of 728724895 in words is "seven hundred twenty-eight million, seven hundred twenty-four thousand, eight hundred ninety-five".