28338882573 has 4 divisors (see below), whose sum is σ = 37785176768. Its totient is φ = 18892588380.

The previous prime is 28338882553. The next prime is 28338882577. The reversal of 28338882573 is 37528883382.

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 not a de Polignac number, because 28338882573 - 2⁸ = 28338882317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338882577) 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, 4723147093 + ... + 4723147098.

It is an arithmetic number, because the mean of its divisors is an integer number (9446294192).

Almost surely, 2^28338882573 is an apocalyptic number.

It is an amenable number.

28338882573 is a deficient number, since it is larger than the sum of its proper divisors (9446294195).

28338882573 is an equidigital number, since it uses as much as digits as its factorization.

28338882573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9446294194.

The product of its digits is 15482880, while the sum is 57.

The spelling of 28338882573 in words is "twenty-eight billion, three hundred thirty-eight million, eight hundred eighty-two thousand, five hundred seventy-three".