28114872 has 32 divisors (see below), whose sum is σ = 74422800. Its totient is φ = 8820224.

The previous prime is 28114847. The next prime is 28114873. The reversal of 28114872 is 27841182.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28114873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34047 + ... + 34862.

Almost surely, 2^28114872 is an apocalyptic number.

It is an amenable number.

28114872 is an abundant number, since it is smaller than the sum of its proper divisors (46307928).

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

28114872 is a wasteful number, since it uses less digits than its factorization.

28114872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68935 (or 68931 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 28114872 is about 5302.3458959219. The cubic root of 28114872 is about 304.0735913712.

The spelling of 28114872 in words is "twenty-eight million, one hundred fourteen thousand, eight hundred seventy-two".