728831851344 has 80 divisors (see below), whose sum is σ = 2112730520640. Its totient is φ = 240538550400.

The previous prime is 728831851339. The next prime is 728831851351. The reversal of 728831851344 is 443158138827.

728831851344 is a `hidden beast` number, since 7 + 2 + 8 + 83 + 1 + 8 + 513 + 44 = 666.

728831851344 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8308402 + ... + 8395665.

It is an arithmetic number, because the mean of its divisors is an integer number (26409131508).

Almost surely, 2^728831851344 is an apocalyptic number.

It is an amenable number.

728831851344 is an abundant number, since it is smaller than the sum of its proper divisors (1383898669296).

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

728831851344 is a wasteful number, since it uses less digits than its factorization.

728831851344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16704185 (or 16704173 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 728831851344 in words is "seven hundred twenty-eight billion, eight hundred thirty-one million, eight hundred fifty-one thousand, three hundred forty-four".