28984867 has 4 divisors (see below), whose sum is σ = 28997280. Its totient is φ = 28972456.

The previous prime is 28984849. The next prime is 28984873. The reversal of 28984867 is 76848982.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28984867 - 2¹¹ = 28982819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28984567) 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, 1528 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (7249320).

Almost surely, 2^28984867 is an apocalyptic number.

28984867 is a deficient number, since it is larger than the sum of its proper divisors (12413).

28984867 is an equidigital number, since it uses as much as digits as its factorization.

28984867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12412.

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

The square root of 28984867 is about 5383.7595600101. The cubic root of 28984867 is about 307.1782326145.

The spelling of 28984867 in words is "twenty-eight million, nine hundred eighty-four thousand, eight hundred sixty-seven".