28110906 has 24 divisors (see below), whose sum is σ = 62325120. Its totient is φ = 9152136.

The previous prime is 28110881. The next prime is 28110919. The reversal of 28110906 is 60901182.

It is a super-2 number, since 2×28110906² = 1580446072281672, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28110906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17386 + ... + 18933.

It is an arithmetic number, because the mean of its divisors is an integer number (2596880).

Almost surely, 2^28110906 is an apocalyptic number.

28110906 is an abundant number, since it is smaller than the sum of its proper divisors (34214214).

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

28110906 is a wasteful number, since it uses less digits than its factorization.

28110906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36370 (or 36367 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 28110906 is about 5301.9718973227. The cubic root of 28110906 is about 304.0592927398.

The spelling of 28110906 in words is "twenty-eight million, one hundred ten thousand, nine hundred six".