28601836233 has 4 divisors (see below), whose sum is σ = 38135781648. Its totient is φ = 19067890820.

The previous prime is 28601836171. The next prime is 28601836247. The reversal of 28601836233 is 33263810682.

It is a happy number.

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 28601836233 - 2⁶ = 28601836169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28601836253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4766972703 + ... + 4766972708.

It is an arithmetic number, because the mean of its divisors is an integer number (9533945412).

Almost surely, 2^28601836233 is an apocalyptic number.

It is an amenable number.

28601836233 is a deficient number, since it is larger than the sum of its proper divisors (9533945415).

28601836233 is an equidigital number, since it uses as much as digits as its factorization.

28601836233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9533945414.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 28601836233 in words is "twenty-eight billion, six hundred one million, eight hundred thirty-six thousand, two hundred thirty-three".