28567144 has 16 divisors (see below), whose sum is σ = 53875620. Its totient is φ = 14200320.

The previous prime is 28567129. The next prime is 28567169. The reversal of 28567144 is 44176582.

It can be written as a sum of positive squares in 2 ways, for example, as 28494244 + 72900 = 5338^2 + 270^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8937 + ... + 11704.

Almost surely, 2^28567144 is an apocalyptic number.

It is an amenable number.

28567144 is a deficient number, since it is larger than the sum of its proper divisors (25308476).

28567144 is a wasteful number, since it uses less digits than its factorization.

28567144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20820 (or 20816 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 28567144 is about 5344.8240382636. The cubic root of 28567144 is about 305.6954265097.

It can be divided in two parts, 2856 and 7144, that added together give a 4-th power (10000 = 10⁴).

The spelling of 28567144 in words is "twenty-eight million, five hundred sixty-seven thousand, one hundred forty-four".