28851272 has 32 divisors (see below), whose sum is σ = 57813600. Its totient is φ = 13457664.

The previous prime is 28851271. The next prime is 28851283. The reversal of 28851272 is 27215882.

It is not an unprimeable number, because it can be changed into a prime (28851271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8768 + ... + 11600.

It is an arithmetic number, because the mean of its divisors is an integer number (1806675).

Almost surely, 2^28851272 is an apocalyptic number.

It is an amenable number.

28851272 is an abundant number, since it is smaller than the sum of its proper divisors (28962328).

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

28851272 is a wasteful number, since it uses less digits than its factorization.

28851272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925 (or 2921 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 28851272 is about 5371.3380083551. The cubic root of 28851272 is about 306.7055642742.

The spelling of 28851272 in words is "twenty-eight million, eight hundred fifty-one thousand, two hundred seventy-two".