28573628 has 12 divisors (see below), whose sum is σ = 50566320. Its totient is φ = 14126112.

The previous prime is 28573627. The next prime is 28573667. The reversal of 28573628 is 82637582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39776 + ... + 40487.

It is an arithmetic number, because the mean of its divisors is an integer number (4213860).

Almost surely, 2^28573628 is an apocalyptic number.

It is an amenable number.

28573628 is a deficient number, since it is larger than the sum of its proper divisors (21992692).

28573628 is a wasteful number, since it uses less digits than its factorization.

28573628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80356 (or 80354 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 28573628 is about 5345.4305719932. The cubic root of 28573628 is about 305.7185530684.

The spelling of 28573628 in words is "twenty-eight million, five hundred seventy-three thousand, six hundred twenty-eight".