728670032003 has 4 divisors (see below), whose sum is σ = 771532975080. Its totient is φ = 685807088928.

The previous prime is 728670031981. The next prime is 728670032009. The reversal of 728670032003 is 300230076827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728670032003 - 2²⁸ = 728401596547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728670032009) 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, 21431471513 + ... + 21431471546.

It is an arithmetic number, because the mean of its divisors is an integer number (192883243770).

Almost surely, 2^728670032003 is an apocalyptic number.

728670032003 is a deficient number, since it is larger than the sum of its proper divisors (42862943077).

728670032003 is a wasteful number, since it uses less digits than its factorization.

728670032003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42862943076.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 728670032003 in words is "seven hundred twenty-eight billion, six hundred seventy million, thirty-two thousand, three".