28974005643 has 16 divisors (see below), whose sum is σ = 42561280512. Its totient is φ = 17386140000.

The previous prime is 28974005623. The next prime is 28974005689. The reversal of 28974005643 is 34650047982.

It is not a de Polignac number, because 28974005643 - 2⁸ = 28974005387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28974005592 and 28974005601.

It is not an unprimeable number, because it can be changed into a prime (28974005623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4343203 + ... + 4349868.

It is an arithmetic number, because the mean of its divisors is an integer number (2660080032).

Almost surely, 2^28974005643 is an apocalyptic number.

28974005643 is a deficient number, since it is larger than the sum of its proper divisors (13587274869).

28974005643 is a wasteful number, since it uses less digits than its factorization.

28974005643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8693186.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 28974005643 in words is "twenty-eight billion, nine hundred seventy-four million, five thousand, six hundred forty-three".