728890672 has 10 divisors (see below), whose sum is σ = 1412225708. Its totient is φ = 364445328.

The previous prime is 728890667. The next prime is 728890699. The reversal of 728890672 is 276098827.

It is a super-3 number, since 3×728890672³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 as a sum of consecutive naturals, namely, 22777818 + ... + 22777849.

Almost surely, 2^728890672 is an apocalyptic number.

It is an amenable number.

728890672 is a deficient number, since it is larger than the sum of its proper divisors (683335036).

728890672 is a wasteful number, since it uses less digits than its factorization.

728890672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45555675 (or 45555669 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 728890672 is about 26997.9753314948. The cubic root of 728890672 is about 899.9550068042.

The spelling of 728890672 in words is "seven hundred twenty-eight million, eight hundred ninety thousand, six hundred seventy-two".