728145323888 has 10 divisors (see below), whose sum is σ = 1410781565064. Its totient is φ = 364072661936.

The previous prime is 728145323887. The next prime is 728145323951. The reversal of 728145323888 is 888323541827.

It is a super-2 number, since 2×728145323888² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728145323887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22754541356 + ... + 22754541387.

Almost surely, 2^728145323888 is an apocalyptic number.

It is an amenable number.

728145323888 is a deficient number, since it is larger than the sum of its proper divisors (682636241176).

728145323888 is a wasteful number, since it uses less digits than its factorization.

728145323888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45509082751 (or 45509082745 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 59.

The spelling of 728145323888 in words is "seven hundred twenty-eight billion, one hundred forty-five million, three hundred twenty-three thousand, eight hundred eighty-eight".