28125272 has 16 divisors (see below), whose sum is σ = 60268560. Its totient is φ = 12053664.

The previous prime is 28125239. The next prime is 28125287. The reversal of 28125272 is 27252182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251063 + ... + 251174.

It is an arithmetic number, because the mean of its divisors is an integer number (3766785).

Almost surely, 2^28125272 is an apocalyptic number.

It is an amenable number.

28125272 is an abundant number, since it is smaller than the sum of its proper divisors (32143288).

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

28125272 is a wasteful number, since it uses less digits than its factorization.

28125272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502250 (or 502246 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 28125272 is about 5303.3265032430. The cubic root of 28125272 is about 304.1110801364. Note that the first 3 decimals are identical.

The spelling of 28125272 in words is "twenty-eight million, one hundred twenty-five thousand, two hundred seventy-two".