28583236 has 12 divisors (see below), whose sum is σ = 54568080. Its totient is φ = 12992360.

The previous prime is 28583207. The next prime is 28583287. The reversal of 28583236 is 63238582.

It is a junction number, because it is equal to n+sod(n) for n = 28583195 and 28583204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324766 + ... + 324853.

It is an arithmetic number, because the mean of its divisors is an integer number (4547340).

Almost surely, 2^28583236 is an apocalyptic number.

It is an amenable number.

28583236 is a deficient number, since it is larger than the sum of its proper divisors (25984844).

28583236 is a wasteful number, since it uses less digits than its factorization.

28583236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649634 (or 649632 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 28583236 is about 5346.3292079706. The cubic root of 28583236 is about 305.7528156022.

It can be divided in two parts, 285 and 83236, that added together give a 4-th power (83521 = 17⁴).

The spelling of 28583236 in words is "twenty-eight million, five hundred eighty-three thousand, two hundred thirty-six".