728143500 has 192 divisors, whose sum is σ = 2502549504. Its totient is φ = 160992000.

The previous prime is 728143459. The next prime is 728143501. The reversal of 728143500 is 5341827.

728143500 is digitally balanced in base 2, because in such base 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 (30).

It is not an unprimeable number, because it can be changed into a prime (728143501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 324382 + ... + 326618.

It is an arithmetic number, because the mean of its divisors is an integer number (13034112).

Almost surely, 2^728143500 is an apocalyptic number.

728143500 is a gapful number since it is divisible by the number (70) 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 728143500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251274752).

728143500 is an abundant number, since it is smaller than the sum of its proper divisors (1774406004).

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

728143500 is a wasteful number, since it uses less digits than its factorization.

728143500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2285 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 728143500 is about 26984.1342273566. The cubic root of 728143500 is about 899.6473927357.

The spelling of 728143500 in words is "seven hundred twenty-eight million, one hundred forty-three thousand, five hundred".