728611286478 has 64 divisors (see below), whose sum is σ = 1529120194560. Its totient is φ = 231008472288.

The previous prime is 728611286477. The next prime is 728611286479. The reversal of 728611286478 is 874682116827.

It is an interprime number because it is at equal distance from previous prime (728611286477) and next prime (728611286479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728611286477) 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 31 ways as a sum of consecutive naturals, for example, 28268425 + ... + 28294187.

It is an arithmetic number, because the mean of its divisors is an integer number (23892503040).

Almost surely, 2^728611286478 is an apocalyptic number.

728611286478 is an abundant number, since it is smaller than the sum of its proper divisors (800508908082).

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

728611286478 is a wasteful number, since it uses less digits than its factorization.

728611286478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26933.

The product of its digits is 14450688, while the sum is 60.

The spelling of 728611286478 in words is "seven hundred twenty-eight billion, six hundred eleven million, two hundred eighty-six thousand, four hundred seventy-eight".