728161348 has 36 divisors (see below), whose sum is σ = 1326829140. Its totient is φ = 349640704.

The previous prime is 728161321. The next prime is 728161373. The reversal of 728161348 is 843161827.

728161348 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 142134084 + 586027264 = 11922^2 + 24208^2 .

It is a super-3 number, since 3×728161348³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 728161348.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 783348 + ... + 784276.

It is an arithmetic number, because the mean of its divisors is an integer number (36856365).

Almost surely, 2^728161348 is an apocalyptic number.

It is an amenable number.

728161348 is a deficient number, since it is larger than the sum of its proper divisors (598667792).

728161348 is a wasteful number, since it uses less digits than its factorization.

728161348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1193 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 728161348 is about 26984.4649381825. The cubic root of 728161348 is about 899.6547432902.

The spelling of 728161348 in words is "seven hundred twenty-eight million, one hundred sixty-one thousand, three hundred forty-eight".