28249552 has 10 divisors (see below), whose sum is σ = 54733538. Its totient is φ = 14124768.

The previous prime is 28249549. The next prime is 28249591. The reversal of 28249552 is 25594282.

It can be written as a sum of positive squares in only one way, i.e., 25765776 + 2483776 = 5076^2 + 1576^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 882783 + ... + 882814.

Almost surely, 2^28249552 is an apocalyptic number.

It is an amenable number.

28249552 is a deficient number, since it is larger than the sum of its proper divisors (26483986).

28249552 is a wasteful number, since it uses less digits than its factorization.

28249552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765605 (or 1765599 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 28249552 is about 5315.0307619053. The cubic root of 28249552 is about 304.5583574922.

The spelling of 28249552 in words is "twenty-eight million, two hundred forty-nine thousand, five hundred fifty-two".