728273936 has 40 divisors (see below), whose sum is σ = 1522157784. Its totient is φ = 335554560.

The previous prime is 728273899. The next prime is 728273941. The reversal of 728273936 is 639372827.

It can be written as a sum of positive squares in 4 ways, for example, as 183331600 + 544942336 = 13540^2 + 23344^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134840 + ... + 140136.

Almost surely, 2^728273936 is an apocalyptic number.

It is an amenable number.

728273936 is an abundant number, since it is smaller than the sum of its proper divisors (793883848).

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

728273936 is a wasteful number, since it uses less digits than its factorization.

728273936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5979 (or 5973 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 728273936 is about 26986.5510208326. The cubic root of 728273936 is about 899.7011089794.

It can be divided in two parts, 7282 and 73936, that added together give a palindrome (81218).

The spelling of 728273936 in words is "seven hundred twenty-eight million, two hundred seventy-three thousand, nine hundred thirty-six".