28867147 has 8 divisors (see below), whose sum is σ = 29709680. Its totient is φ = 28032480.

The previous prime is 28867129. The next prime is 28867159. The reversal of 28867147 is 74176882.

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 28867147 - 2⁷ = 28867019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28867117) 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, 5929 + ... + 9637.

It is an arithmetic number, because the mean of its divisors is an integer number (3713710).

Almost surely, 2^28867147 is an apocalyptic number.

28867147 is a deficient number, since it is larger than the sum of its proper divisors (842533).

28867147 is a wasteful number, since it uses less digits than its factorization.

28867147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933.

The product of its digits is 150528, while the sum is 43.

The square root of 28867147 is about 5372.8155561121. The cubic root of 28867147 is about 306.7618074106.

The spelling of 28867147 in words is "twenty-eight million, eight hundred sixty-seven thousand, one hundred forty-seven".