28132950667 has 4 divisors (see below), whose sum is σ = 29787830136. Its totient is φ = 26478071200.

The previous prime is 28132950661. The next prime is 28132950673. The reversal of 28132950667 is 76605923182.

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

It is an interprime number because it is at equal distance from previous prime (28132950661) and next prime (28132950673).

It is a de Polignac number, because none of the positive numbers 2^k-28132950667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28132950667.

It is not an unprimeable number, because it can be changed into a prime (28132950661) 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, 827439709 + ... + 827439742.

It is an arithmetic number, because the mean of its divisors is an integer number (7446957534).

Almost surely, 2^28132950667 is an apocalyptic number.

28132950667 is a deficient number, since it is larger than the sum of its proper divisors (1654879469).

28132950667 is a wasteful number, since it uses less digits than its factorization.

28132950667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654879468.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 28132950667 in words is "twenty-eight billion, one hundred thirty-two million, nine hundred fifty thousand, six hundred sixty-seven".