28648951167 has 4 divisors (see below), whose sum is σ = 38198601560. Its totient is φ = 19099300776.

The previous prime is 28648951139. The next prime is 28648951181. The reversal of 28648951167 is 76115984682.

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

It is not a de Polignac number, because 28648951167 - 2⁷ = 28648951039 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 (28648958167) 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, 4774825192 + ... + 4774825197.

It is an arithmetic number, because the mean of its divisors is an integer number (9549650390).

Almost surely, 2^28648951167 is an apocalyptic number.

28648951167 is a deficient number, since it is larger than the sum of its proper divisors (9549650393).

28648951167 is an equidigital number, since it uses as much as digits as its factorization.

28648951167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549650392.

The product of its digits is 5806080, while the sum is 57.

The spelling of 28648951167 in words is "twenty-eight billion, six hundred forty-eight million, nine hundred fifty-one thousand, one hundred sixty-seven".