28601023439 has 4 divisors (see below), whose sum is σ = 28605517656. Its totient is φ = 28596529224.

The previous prime is 28601023427. The next prime is 28601023441. The reversal of 28601023439 is 93432010682.

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

It is a cyclic number.

It is not a de Polignac number, because 28601023439 - 2⁸ = 28601023183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28601023459) 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, 2237549 + ... + 2250294.

It is an arithmetic number, because the mean of its divisors is an integer number (7151379414).

Almost surely, 2^28601023439 is an apocalyptic number.

28601023439 is a deficient number, since it is larger than the sum of its proper divisors (4494217).

28601023439 is an equidigital number, since it uses as much as digits as its factorization.

28601023439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4494216.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 28601023439 in words is "twenty-eight billion, six hundred one million, twenty-three thousand, four hundred thirty-nine".