728341136 has 40 divisors (see below), whose sum is σ = 1496853600. Its totient is φ = 342351360.

The previous prime is 728341127. The next prime is 728341147. The reversal of 728341136 is 631143827.

It is a junction number, because it is equal to n+sod(n) for n = 728341096 and 728341105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30680 + ... + 48968.

It is an arithmetic number, because the mean of its divisors is an integer number (37421340).

Almost surely, 2^728341136 is an apocalyptic number.

728341136 is a gapful number since it is divisible by the number (76) 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 728341136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748426800).

728341136 is an abundant number, since it is smaller than the sum of its proper divisors (768512464).

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

728341136 is a wasteful number, since it uses less digits than its factorization.

728341136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18447 (or 18441 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 728341136 is about 26987.7960567365. The cubic root of 728341136 is about 899.7287808265.

The spelling of 728341136 in words is "seven hundred twenty-eight million, three hundred forty-one thousand, one hundred thirty-six".