28449256 has 32 divisors (see below), whose sum is σ = 58413600. Its totient is φ = 12882240.

The previous prime is 28449233. The next prime is 28449277. The reversal of 28449256 is 65294482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32926 + ... + 33778.

It is an arithmetic number, because the mean of its divisors is an integer number (1825425).

Almost surely, 2^28449256 is an apocalyptic number.

It is an amenable number.

28449256 is an abundant number, since it is smaller than the sum of its proper divisors (29964344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28449256 is a wasteful number, since it uses less digits than its factorization.

28449256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249 (or 1245 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 28449256 is about 5333.7843975924. The cubic root of 28449256 is about 305.2743424277.

It can be divided in two parts, 2844 and 9256, that added together give a square (12100 = 110²).

The spelling of 28449256 in words is "twenty-eight million, four hundred forty-nine thousand, two hundred fifty-six".