28748642673 has 16 divisors (see below), whose sum is σ = 39340779840. Its totient is φ = 18667562496.

The previous prime is 28748642633. The next prime is 28748642719. The reversal of 28748642673 is 37624684782.

It is not a de Polignac number, because 28748642673 - 2²¹ = 28746545521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28748642633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785640 + ... + 821417.

It is an arithmetic number, because the mean of its divisors is an integer number (2458798740).

Almost surely, 2^28748642673 is an apocalyptic number.

It is an amenable number.

28748642673 is a deficient number, since it is larger than the sum of its proper divisors (10592137167).

28748642673 is a wasteful number, since it uses less digits than its factorization.

28748642673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607216.

The product of its digits is 21676032, while the sum is 57.

The spelling of 28748642673 in words is "twenty-eight billion, seven hundred forty-eight million, six hundred forty-two thousand, six hundred seventy-three".