28332544 has 20 divisors (see below), whose sum is σ = 56610774. Its totient is φ = 14166016.

The previous prime is 28332539. The next prime is 28332547. The reversal of 28332544 is 44523382.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 2930944 = 5040^2 + 1712^2 .

It is not an unprimeable number, because it can be changed into a prime (28332547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27157 + ... + 28180.

Almost surely, 2^28332544 is an apocalyptic number.

It is an amenable number.

28332544 is a deficient number, since it is larger than the sum of its proper divisors (28278230).

28332544 is an frugal number, since it uses more digits than its factorization.

28332544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55355 (or 55339 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 28332544 is about 5322.8323287513. The cubic root of 28332544 is about 304.8563114271.

The spelling of 28332544 in words is "twenty-eight million, three hundred thirty-two thousand, five hundred forty-four".