28058643233 has 4 divisors (see below), whose sum is σ = 28816984980. Its totient is φ = 27300301488.

The previous prime is 28058643229. The next prime is 28058643247. The reversal of 28058643233 is 33234685082.

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 26246268049 + 1812375184 = 162007^2 + 42572^2 .

It is a cyclic number.

It is not a de Polignac number, because 28058643233 - 2² = 28058643229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28058643533) 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, 379170818 + ... + 379170891.

It is an arithmetic number, because the mean of its divisors is an integer number (7204246245).

Almost surely, 2^28058643233 is an apocalyptic number.

It is an amenable number.

28058643233 is a deficient number, since it is larger than the sum of its proper divisors (758341747).

28058643233 is an equidigital number, since it uses as much as digits as its factorization.

28058643233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758341746.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 28058643233 in words is "twenty-eight billion, fifty-eight million, six hundred forty-three thousand, two hundred thirty-three".