28668016 has 20 divisors (see below), whose sum is σ = 59817352. Its totient is φ = 13231296.

The previous prime is 28667953. The next prime is 28668019. The reversal of 28668016 is 61086682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28668019) 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, 68706 + ... + 69121.

Almost surely, 2^28668016 is an apocalyptic number.

28668016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28668016 is an abundant number, since it is smaller than the sum of its proper divisors (31149336).

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

28668016 is a wasteful number, since it uses less digits than its factorization.

28668016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137848 (or 137842 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 28668016 is about 5354.2521419896. The cubic root of 28668016 is about 306.0548124005.

The spelling of 28668016 in words is "twenty-eight million, six hundred sixty-eight thousand, sixteen".