28894867 has 4 divisors (see below), whose sum is σ = 28986336. Its totient is φ = 28803400.

The previous prime is 28894843. The next prime is 28894871. The reversal of 28894867 is 76849882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28894867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28894897) 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, 45259 + ... + 45892.

It is an arithmetic number, because the mean of its divisors is an integer number (7246584).

Almost surely, 2^28894867 is an apocalyptic number.

28894867 is a deficient number, since it is larger than the sum of its proper divisors (91469).

28894867 is an equidigital number, since it uses as much as digits as its factorization.

28894867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91468.

The product of its digits is 1548288, while the sum is 52.

The square root of 28894867 is about 5375.3945901673. The cubic root of 28894867 is about 306.8599664806.

The spelling of 28894867 in words is "twenty-eight million, eight hundred ninety-four thousand, eight hundred sixty-seven".