728850977 has 4 divisors (see below), whose sum is σ = 731540736. Its totient is φ = 726161220.

The previous prime is 728850929. The next prime is 728851007. The reversal of 728850977 is 779058827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 779058827 = 1103 ⋅706309.

It is a cyclic number.

It is not a de Polignac number, because 728850977 - 2¹⁶ = 728785441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728850917) 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, 1344473 + ... + 1345014.

It is an arithmetic number, because the mean of its divisors is an integer number (182885184).

Almost surely, 2^728850977 is an apocalyptic number.

It is an amenable number.

728850977 is a deficient number, since it is larger than the sum of its proper divisors (2689759).

728850977 is a wasteful number, since it uses less digits than its factorization.

728850977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689758.

The product of its (nonzero) digits is 1975680, while the sum is 53.

The square root of 728850977 is about 26997.2401737659. The cubic root of 728850977 is about 899.9386694833.

The spelling of 728850977 in words is "seven hundred twenty-eight million, eight hundred fifty thousand, nine hundred seventy-seven".