728828280591 has 16 divisors (see below), whose sum is σ = 1030725421440. Its totient is φ = 456798756960.

The previous prime is 728828280589. The next prime is 728828280601. The reversal of 728828280591 is 195082828827.

It is not a de Polignac number, because 728828280591 - 2¹ = 728828280589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728828280581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48795820 + ... + 48810753.

It is an arithmetic number, because the mean of its divisors is an integer number (64420338840).

Almost surely, 2^728828280591 is an apocalyptic number.

728828280591 is a deficient number, since it is larger than the sum of its proper divisors (301897140849).

728828280591 is a wasteful number, since it uses less digits than its factorization.

728828280591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97606726.

The product of its (nonzero) digits is 10321920, while the sum is 60.

The spelling of 728828280591 in words is "seven hundred twenty-eight billion, eight hundred twenty-eight million, two hundred eighty thousand, five hundred ninety-one".