28968128902441 has 8 divisors (see below), whose sum is σ = 29118518654120. Its totient is φ = 28817742200832.

The previous prime is 28968128902399. The next prime is 28968128902541. The reversal of 28968128902441 is 14420982186982.

It can be written as a sum of positive squares in 4 ways, for example, as 11410688076841 + 17557440825600 = 3377971^2 + 4190160^2 .

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 28968128902441 - 2²⁹ = 28967592031529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28968128902541) 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, 19703881 + ... + 21122953.

It is an arithmetic number, because the mean of its divisors is an integer number (3639814831765).

Almost surely, 2^{28968128902441} is an apocalyptic number.

It is an amenable number.

28968128902441 is a deficient number, since it is larger than the sum of its proper divisors (150389751679).

28968128902441 is a wasteful number, since it uses less digits than its factorization.

28968128902441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525035.

The product of its (nonzero) digits is 31850496, while the sum is 64.

The spelling of 28968128902441 in words is "twenty-eight trillion, nine hundred sixty-eight billion, one hundred twenty-eight million, nine hundred two thousand, four hundred forty-one".