28667842 has 24 divisors (see below), whose sum is σ = 51193296. Its totient is φ = 11998728.

The previous prime is 28667833. The next prime is 28667851. The reversal of 28667842 is 24876682.

It is an interprime number because it is at equal distance from previous prime (28667833) and next prime (28667851).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813 + ... + 7615.

It is an arithmetic number, because the mean of its divisors is an integer number (2133054).

Almost surely, 2^28667842 is an apocalyptic number.

28667842 is a deficient number, since it is larger than the sum of its proper divisors (22525454).

28667842 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (28667841) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (6855).

28667842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6862 (or 6855 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 28667842 is about 5354.2358931971. The cubic root of 28667842 is about 306.0541932012.

The spelling of 28667842 in words is "twenty-eight million, six hundred sixty-seven thousand, eight hundred forty-two".