28282872 has 32 divisors (see below), whose sum is σ = 71442000. Its totient is φ = 9329664.

The previous prime is 28282853. The next prime is 28282897. The reversal of 28282872 is 27828282.

It is a self number, because there is not a number n which added to its sum of digits gives 28282872.

It is a congruent number.

It is an unprimeable number.

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, 3747 + ... + 8402.

Almost surely, 2^28282872 is an apocalyptic number.

It is an amenable number.

28282872 is an abundant number, since it is smaller than the sum of its proper divisors (43159128).

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

28282872 is a wasteful number, since it uses less digits than its factorization.

28282872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12255 (or 12251 counting only the distinct ones).

The product of its digits is 57344, while the sum is 39.

The square root of 28282872 is about 5318.1643449596. The cubic root of 28282872 is about 304.6780513940.

The spelling of 28282872 in words is "twenty-eight million, two hundred eighty-two thousand, eight hundred seventy-two".