28544456 has 8 divisors (see below), whose sum is σ = 53520870. Its totient is φ = 14272224.

The previous prime is 28544443. The next prime is 28544471. The reversal of 28544456 is 65444582.

It can be written as a sum of positive squares in only one way, i.e., 21436900 + 7107556 = 4630^2 + 2666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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, 1784021 + ... + 1784036.

Almost surely, 2^28544456 is an apocalyptic number.

It is an amenable number.

28544456 is a deficient number, since it is larger than the sum of its proper divisors (24976414).

28544456 is a wasteful number, since it uses less digits than its factorization.

28544456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568063 (or 3568059 counting only the distinct ones).

The product of its digits is 153600, while the sum is 38.

The square root of 28544456 is about 5342.7011894734. The cubic root of 28544456 is about 305.6144773986.

It can be divided in two parts, 2 and 8544456, that added together give a palindrome (8544458).

The spelling of 28544456 in words is "twenty-eight million, five hundred forty-four thousand, four hundred fifty-six".