28667004 has 24 divisors (see below), whose sum is σ = 67342800. Its totient is φ = 9490944.

The previous prime is 28666987. The next prime is 28667017. The reversal of 28667004 is 40076682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6229 + ... + 9804.

It is an arithmetic number, because the mean of its divisors is an integer number (2805950).

Almost surely, 2^28667004 is an apocalyptic number.

It is an amenable number.

28667004 is an abundant number, since it is smaller than the sum of its proper divisors (38675796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28667004 is a wasteful number, since it uses less digits than its factorization.

28667004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16189 (or 16187 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 28667004 is about 5354.1576368277. The cubic root of 28667004 is about 306.0512110454.

It can be divided in two parts, 2866 and 7004, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 28667004 in words is "twenty-eight million, six hundred sixty-seven thousand, four".