728937894 has 16 divisors (see below), whose sum is σ = 1461172032. Its totient is φ = 242429928.

The previous prime is 728937863. The next prime is 728937929. The reversal of 728937894 is 498739827.

It is a super-3 number, since 3×728937894³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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, 134464 + ... + 139779.

It is an arithmetic number, because the mean of its divisors is an integer number (91323252).

Almost surely, 2^728937894 is an apocalyptic number.

728937894 is an abundant number, since it is smaller than the sum of its proper divisors (732234138).

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

728937894 is a wasteful number, since it uses less digits than its factorization.

728937894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274691.

The product of its digits is 6096384, while the sum is 57.

The square root of 728937894 is about 26998.8498643924. The cubic root of 728937894 is about 899.9744412495.

The spelling of 728937894 in words is "seven hundred twenty-eight million, nine hundred thirty-seven thousand, eight hundred ninety-four".