28667298 has 16 divisors (see below), whose sum is σ = 62546976. Its totient is φ = 8687040.

The previous prime is 28667297. The next prime is 28667351. The reversal of 28667298 is 89276682.

It is a happy number.

It is a super-3 number, since 3×28667298³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28667291) 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, 217111 + ... + 217242.

It is an arithmetic number, because the mean of its divisors is an integer number (3909186).

Almost surely, 2^28667298 is an apocalyptic number.

28667298 is an abundant number, since it is smaller than the sum of its proper divisors (33879678).

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

28667298 is a wasteful number, since it uses less digits than its factorization.

28667298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434369.

The product of its digits is 580608, while the sum is 48.

The square root of 28667298 is about 5354.1850920565. The cubic root of 28667298 is about 306.0522572976.

The spelling of 28667298 in words is "twenty-eight million, six hundred sixty-seven thousand, two hundred ninety-eight".