28459223801 has 4 divisors (see below), whose sum is σ = 28459768704. Its totient is φ = 28458678900.

The previous prime is 28459223797. The next prime is 28459223827. The reversal of 28459223801 is 10832295482.

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 28459223801 - 2² = 28459223797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28459222801) 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, 184685 + ... + 301706.

It is an arithmetic number, because the mean of its divisors is an integer number (7114942176).

Almost surely, 2^28459223801 is an apocalyptic number.

It is an amenable number.

28459223801 is a deficient number, since it is larger than the sum of its proper divisors (544903).

28459223801 is an equidigital number, since it uses as much as digits as its factorization.

28459223801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544902.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 28459223801 in words is "twenty-eight billion, four hundred fifty-nine million, two hundred twenty-three thousand, eight hundred one".