728447001 has 8 divisors (see below), whose sum is σ = 971408064. Its totient is φ = 485558640.

The previous prime is 728446997. The next prime is 728447017. The reversal of 728447001 is 100744827.

728447001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 728447001 - 2² = 728446997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728447051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12700 + ... + 40226.

It is an arithmetic number, because the mean of its divisors is an integer number (121426008).

Almost surely, 2^728447001 is an apocalyptic number.

It is an amenable number.

728447001 is a deficient number, since it is larger than the sum of its proper divisors (242961063).

728447001 is a wasteful number, since it uses less digits than its factorization.

728447001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36351.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 728447001 is about 26989.7573349595. The cubic root of 728447001 is about 899.7723708276.

It can be divided in two parts, 7284 and 47001, that added together give a triangular number (54285 = T₃₂₉).

The spelling of 728447001 in words is "seven hundred twenty-eight million, four hundred forty-seven thousand, one".