28671067 has 4 divisors (see below), whose sum is σ = 29337880. Its totient is φ = 28004256.

The previous prime is 28671059. The next prime is 28671073. The reversal of 28671067 is 76017682.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28671067 - 2³ = 28671059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28671017) 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, 333342 + ... + 333427.

It is an arithmetic number, because the mean of its divisors is an integer number (7334470).

Almost surely, 2^28671067 is an apocalyptic number.

28671067 is a deficient number, since it is larger than the sum of its proper divisors (666813).

28671067 is an equidigital number, since it uses as much as digits as its factorization.

28671067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666812.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 28671067 is about 5354.5370481490. The cubic root of 28671067 is about 306.0656693326.

The spelling of 28671067 in words is "twenty-eight million, six hundred seventy-one thousand, sixty-seven".