728046733 has 4 divisors (see below), whose sum is σ = 731858688. Its totient is φ = 724234780.

The previous prime is 728046721. The next prime is 728046751. The reversal of 728046733 is 337640827.

It is a happy number.

728046733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 728046733 - 2¹³ = 728038541 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728046703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1905691 + ... + 1906072.

It is an arithmetic number, because the mean of its divisors is an integer number (182964672).

Almost surely, 2^728046733 is an apocalyptic number.

It is an amenable number.

728046733 is a deficient number, since it is larger than the sum of its proper divisors (3811955).

728046733 is a wasteful number, since it uses less digits than its factorization.

728046733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811954.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 728046733 is about 26982.3411326742. The cubic root of 728046733 is about 899.6075379379.

The spelling of 728046733 in words is "seven hundred twenty-eight million, forty-six thousand, seven hundred thirty-three".