733400728 has 16 divisors (see below), whose sum is σ = 1419485760. Its totient is φ = 354871200.

The previous prime is 733400719. The next prime is 733400753. The reversal of 733400728 is 827004337.

It is a super-3 number, since 3×733400728³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 733400693 and 733400702.

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 3 ways as a sum of consecutive naturals, for example, 1478383 + ... + 1478878.

It is an arithmetic number, because the mean of its divisors is an integer number (88717860).

Almost surely, 2^733400728 is an apocalyptic number.

It is an amenable number.

733400728 is a deficient number, since it is larger than the sum of its proper divisors (686085032).

733400728 is a wasteful number, since it uses less digits than its factorization.

733400728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957298 (or 2957294 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 733400728 is about 27081.3723433655. The cubic root of 733400728 is about 901.8073672182.

The spelling of 733400728 in words is "seven hundred thirty-three million, four hundred thousand, seven hundred twenty-eight".