728093938 has 16 divisors (see below), whose sum is σ = 1283075136. Its totient is φ = 305493840.

The previous prime is 728093909. The next prime is 728093963. The reversal of 728093938 is 839390827.

It is a junction number, because it is equal to n+sod(n) for n = 728093891 and 728093900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272606 + ... + 1273177.

It is an arithmetic number, because the mean of its divisors is an integer number (80192196).

Almost surely, 2^728093938 is an apocalyptic number.

728093938 is a deficient number, since it is larger than the sum of its proper divisors (554981198).

728093938 is a wasteful number, since it uses less digits than its factorization.

728093938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545809.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 728093938 is about 26983.2158572695. The cubic root of 728093938 is about 899.6269803968.

The spelling of 728093938 in words is "seven hundred twenty-eight million, ninety-three thousand, nine hundred thirty-eight".