28916567 has 4 divisors (see below), whose sum is σ = 29913720. Its totient is φ = 27919416.

The previous prime is 28916561. The next prime is 28916581. The reversal of 28916567 is 76561982.

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

It is a cyclic number.

It is not a de Polignac number, because 28916567 - 2⁸ = 28916311 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 (28916561) 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, 498533 + ... + 498590.

It is an arithmetic number, because the mean of its divisors is an integer number (7478430).

Almost surely, 2^28916567 is an apocalyptic number.

28916567 is a deficient number, since it is larger than the sum of its proper divisors (997153).

28916567 is an equidigital number, since it uses as much as digits as its factorization.

28916567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997152.

The product of its digits is 181440, while the sum is 44.

The square root of 28916567 is about 5377.4126678171. The cubic root of 28916567 is about 306.9367643774.

The spelling of 28916567 in words is "twenty-eight million, nine hundred sixteen thousand, five hundred sixty-seven".