731044873728 has 480 divisors, whose sum is σ = 2355897962880. Its totient is φ = 223719874560.

The previous prime is 731044873711. The next prime is 731044873739. The reversal of 731044873728 is 827378440137.

731044873728 is a `hidden beast` number, since 7 + 3 + 104 + 487 + 37 + 28 = 666.

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 47 ways as a sum of consecutive naturals, for example, 492949275 + ... + 492950757.

It is an arithmetic number, because the mean of its divisors is an integer number (4908120756).

Almost surely, 2^731044873728 is an apocalyptic number.

731044873728 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731044873728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177948981440).

731044873728 is an abundant number, since it is smaller than the sum of its proper divisors (1624853089152).

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

731044873728 is a wasteful number, since it uses less digits than its factorization.

731044873728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 54.

The spelling of 731044873728 in words is "seven hundred thirty-one billion, forty-four million, eight hundred seventy-three thousand, seven hundred twenty-eight".