728631830862 has 80 divisors (see below), whose sum is σ = 1758544869312. Its totient is φ = 224158777920.

The previous prime is 728631830741. The next prime is 728631830881. The reversal of 728631830862 is 268038136827.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 728631830799 and 728631830808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15238312 + ... + 15286052.

Almost surely, 2^728631830862 is an apocalyptic number.

728631830862 is an abundant number, since it is smaller than the sum of its proper divisors (1029913038450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728631830862 is a wasteful number, since it uses less digits than its factorization.

728631830862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55015 (or 55006 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 728631830862 in words is "seven hundred twenty-eight billion, six hundred thirty-one million, eight hundred thirty thousand, eight hundred sixty-two".