28942005601 has 4 divisors (see below), whose sum is σ = 28942490772. Its totient is φ = 28941520432.

The previous prime is 28942005557. The next prime is 28942005613. The reversal of 28942005601 is 10650024982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16033637376 + 12908368225 = 126624^2 + 113615^2 .

It is a cyclic number.

It is not a de Polignac number, because 28942005601 - 2⁹ = 28942005089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28942005101) 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, 138106 + ... + 277411.

It is an arithmetic number, because the mean of its divisors is an integer number (7235622693).

Almost surely, 2^28942005601 is an apocalyptic number.

It is an amenable number.

28942005601 is a deficient number, since it is larger than the sum of its proper divisors (485171).

28942005601 is an equidigital number, since it uses as much as digits as its factorization.

28942005601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485170.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 28942005601 in words is "twenty-eight billion, nine hundred forty-two million, five thousand, six hundred one".