28449550 has 12 divisors (see below), whose sum is σ = 52916256. Its totient is φ = 11379800.

The previous prime is 28449541. The next prime is 28449563. The reversal of 28449550 is 5594482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284446 + ... + 284545.

It is an arithmetic number, because the mean of its divisors is an integer number (4409688).

Almost surely, 2^28449550 is an apocalyptic number.

28449550 is a deficient number, since it is larger than the sum of its proper divisors (24466706).

28449550 is a wasteful number, since it uses less digits than its factorization.

28449550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569003 (or 568998 counting only the distinct ones).

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

The square root of 28449550 is about 5333.8119576903. The cubic root of 28449550 is about 305.2753940117.

The spelling of 28449550 in words is "twenty-eight million, four hundred forty-nine thousand, five hundred fifty".