28628828337 has 4 divisors (see below), whose sum is σ = 38171771120. Its totient is φ = 19085885556.

The previous prime is 28628828323. The next prime is 28628828339. The reversal of 28628828337 is 73382882682.

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 28628828337 - 2⁷ = 28628828209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28628828339) 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, 4771471387 + ... + 4771471392.

It is an arithmetic number, because the mean of its divisors is an integer number (9542942780).

Almost surely, 2^28628828337 is an apocalyptic number.

It is an amenable number.

28628828337 is a deficient number, since it is larger than the sum of its proper divisors (9542942783).

28628828337 is an equidigital number, since it uses as much as digits as its factorization.

28628828337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9542942782.

The product of its digits is 12386304, while the sum is 57.

The spelling of 28628828337 in words is "twenty-eight billion, six hundred twenty-eight million, eight hundred twenty-eight thousand, three hundred thirty-seven".