28439067 has 8 divisors (see below), whose sum is σ = 39914560. Its totient is φ = 17961480.

The previous prime is 28439057. The next prime is 28439071. The reversal of 28439067 is 76093482.

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

It is not a de Polignac number, because 28439067 - 2¹⁴ = 28422683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28439027) 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, 249409 + ... + 249522.

It is an arithmetic number, because the mean of its divisors is an integer number (4989320).

Almost surely, 2^28439067 is an apocalyptic number.

28439067 is a deficient number, since it is larger than the sum of its proper divisors (11475493).

28439067 is a wasteful number, since it uses less digits than its factorization.

28439067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498953.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 28439067 is about 5332.8291740876. The cubic root of 28439067 is about 305.2378937688.

The spelling of 28439067 in words is "twenty-eight million, four hundred thirty-nine thousand, sixty-seven".