728278684974 has 48 divisors (see below), whose sum is σ = 1621331059920. Its totient is φ = 236089624320.

The previous prime is 728278684963. The next prime is 728278684993. The reversal of 728278684974 is 479486872827.

It is a happy number.

728278684974 is a `hidden beast` number, since 7 + 2 + 8 + 2 + 78 + 68 + 497 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1200294 + ... + 1702134.

It is an arithmetic number, because the mean of its divisors is an integer number (33777730415).

Almost surely, 2^728278684974 is an apocalyptic number.

728278684974 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

728278684974 is an abundant number, since it is smaller than the sum of its proper divisors (893052374946).

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

728278684974 is a wasteful number, since it uses less digits than its factorization.

728278684974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504065 (or 504062 counting only the distinct ones).

The product of its digits is 606928896, while the sum is 72.

The spelling of 728278684974 in words is "seven hundred twenty-eight billion, two hundred seventy-eight million, six hundred eighty-four thousand, nine hundred seventy-four".