28137118 has 8 divisors (see below), whose sum is σ = 42242112. Its totient is φ = 14056416.

The previous prime is 28137101. The next prime is 28137121. The reversal of 28137118 is 81173182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28137118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2830 + ... + 8017.

It is an arithmetic number, because the mean of its divisors is an integer number (5280264).

Almost surely, 2^28137118 is an apocalyptic number.

28137118 is a deficient number, since it is larger than the sum of its proper divisors (14104994).

28137118 is a wasteful number, since it uses less digits than its factorization.

28137118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12146.

The product of its digits is 2688, while the sum is 31.

The square root of 28137118 is about 5304.4432318576. The cubic root of 28137118 is about 304.1537700251.

The spelling of 28137118 in words is "twenty-eight million, one hundred thirty-seven thousand, one hundred eighteen".