28728574603 has 8 divisors (see below), whose sum is σ = 30944664576. Its totient is φ = 26593069800.

The previous prime is 28728574577. The next prime is 28728574621. The reversal of 28728574603 is 30647582782.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28728574603 - 2⁵ = 28728574571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28728574673) 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, 20145553 + ... + 20146978.

It is an arithmetic number, because the mean of its divisors is an integer number (3868083072).

Almost surely, 2^28728574603 is an apocalyptic number.

28728574603 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28728574603 is a deficient number, since it is larger than the sum of its proper divisors (2216089973).

28728574603 is a wasteful number, since it uses less digits than its factorization.

28728574603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40292585.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 28728574603 in words is "twenty-eight billion, seven hundred twenty-eight million, five hundred seventy-four thousand, six hundred three".