28957872041 has 4 divisors (see below), whose sum is σ = 33094710912. Its totient is φ = 24821033172.

The previous prime is 28957872023. The next prime is 28957872103. The reversal of 28957872041 is 14027875982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28957872041 - 2¹⁸ = 28957609897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28957874041) 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, 2068419425 + ... + 2068419438.

It is an arithmetic number, because the mean of its divisors is an integer number (8273677728).

Almost surely, 2^28957872041 is an apocalyptic number.

It is an amenable number.

28957872041 is a deficient number, since it is larger than the sum of its proper divisors (4136838871).

28957872041 is an equidigital number, since it uses as much as digits as its factorization.

28957872041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136838870.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 28957872041 in words is "twenty-eight billion, nine hundred fifty-seven million, eight hundred seventy-two thousand, forty-one".