28584872 has 16 divisors (see below), whose sum is σ = 54904500. Its totient is φ = 13943680.

The previous prime is 28584863. The next prime is 28584877. The reversal of 28584872 is 27848582.

It can be written as a sum of positive squares in 2 ways, for example, as 23174596 + 5410276 = 4814^2 + 2326^2 .

It is not an unprimeable number, because it can be changed into a prime (28584877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43247 + ... + 43902.

Almost surely, 2^28584872 is an apocalyptic number.

It is an amenable number.

28584872 is a deficient number, since it is larger than the sum of its proper divisors (26319628).

28584872 is a wasteful number, since it uses less digits than its factorization.

28584872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87196 (or 87192 counting only the distinct ones).

The product of its digits is 286720, while the sum is 44.

The square root of 28584872 is about 5346.4822079569. The cubic root of 28584872 is about 305.7586488823.

The spelling of 28584872 in words is "twenty-eight million, five hundred eighty-four thousand, eight hundred seventy-two".