28667097 has 12 divisors (see below), whose sum is σ = 42110640. Its totient is φ = 18787128.

The previous prime is 28667087. The next prime is 28667129. The reversal of 28667097 is 79076682.

It is a happy number.

It is not a de Polignac number, because 28667097 - 2⁴ = 28667081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28667017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26463 + ... + 27524.

It is an arithmetic number, because the mean of its divisors is an integer number (3509220).

Almost surely, 2^28667097 is an apocalyptic number.

It is an amenable number.

28667097 is a deficient number, since it is larger than the sum of its proper divisors (13443543).

28667097 is a wasteful number, since it uses less digits than its factorization.

28667097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54052 (or 54049 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 28667097 is about 5354.1663216602. The cubic root of 28667097 is about 306.0515420035.

The spelling of 28667097 in words is "twenty-eight million, six hundred sixty-seven thousand, ninety-seven".