728148544 has 28 divisors (see below), whose sum is σ = 1446678844. Its totient is φ = 363631104.

The previous prime is 728148527. The next prime is 728148569. The reversal of 728148544 is 445841827.

It can be written as a sum of positive squares in 2 ways, for example, as 240622144 + 487526400 = 15512^2 + 22080^2 .

It is a super-3 number, since 3×728148544³ (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 728148544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49642 + ... + 62614.

Almost surely, 2^728148544 is an apocalyptic number.

It is an amenable number.

728148544 is a deficient number, since it is larger than the sum of its proper divisors (718530300).

728148544 is a wasteful number, since it uses less digits than its factorization.

728148544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13862 (or 13852 counting only the distinct ones).

The product of its digits is 286720, while the sum is 43.

The square root of 728148544 is about 26984.2276895226. The cubic root of 728148544 is about 899.6494700785.

The spelling of 728148544 in words is "seven hundred twenty-eight million, one hundred forty-eight thousand, five hundred forty-four".