28943267 has 8 divisors (see below), whose sum is σ = 29339280. Its totient is φ = 28549600.

The previous prime is 28943249. The next prime is 28943273. The reversal of 28943267 is 76234982.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28943267 - 2⁶ = 28943203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28943237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51128 + ... + 51690.

It is an arithmetic number, because the mean of its divisors is an integer number (3667410).

Almost surely, 2^28943267 is an apocalyptic number.

28943267 is a deficient number, since it is larger than the sum of its proper divisors (396013).

28943267 is a wasteful number, since it uses less digits than its factorization.

28943267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173.

The product of its digits is 145152, while the sum is 41.

The square root of 28943267 is about 5379.8947015718. The cubic root of 28943267 is about 307.0312049399.

The spelling of 28943267 in words is "twenty-eight million, nine hundred forty-three thousand, two hundred sixty-seven".