28636484 has 12 divisors (see below), whose sum is σ = 50207724. Its totient is φ = 14291424.

The previous prime is 28636481. The next prime is 28636493. The reversal of 28636484 is 48463682.

It can be written as a sum of positive squares in 2 ways, for example, as 4528384 + 24108100 = 2128^2 + 4910^2 .

It is not an unprimeable number, because it can be changed into a prime (28636481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4199 + ... + 8654.

It is an arithmetic number, because the mean of its divisors is an integer number (4183977).

Almost surely, 2^28636484 is an apocalyptic number.

It is an amenable number.

28636484 is a deficient number, since it is larger than the sum of its proper divisors (21571240).

28636484 is a wasteful number, since it uses less digits than its factorization.

28636484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13414 (or 13412 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The square root of 28636484 is about 5351.3067562979. The cubic root of 28636484 is about 305.9425611642.

The spelling of 28636484 in words is "twenty-eight million, six hundred thirty-six thousand, four hundred eighty-four".