28576667 has 8 divisors (see below), whose sum is σ = 32734176. Its totient is φ = 24437952.

The previous prime is 28576663. The next prime is 28576721. The reversal of 28576667 is 76667582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28576667 - 2² = 28576663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28576663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268 + ... + 7665.

It is an arithmetic number, because the mean of its divisors is an integer number (4091772).

Almost surely, 2^28576667 is an apocalyptic number.

28576667 is a deficient number, since it is larger than the sum of its proper divisors (4157509).

28576667 is an equidigital number, since it uses as much as digits as its factorization.

28576667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9397.

The product of its digits is 846720, while the sum is 47.

The square root of 28576667 is about 5345.7148259143. The cubic root of 28576667 is about 305.7293911011.

The spelling of 28576667 in words is "twenty-eight million, five hundred seventy-six thousand, six hundred sixty-seven".