28534224 has 40 divisors (see below), whose sum is σ = 73904992. Its totient is φ = 9486720.

The previous prime is 28534213. The next prime is 28534243. The reversal of 28534224 is 42243582.

It is a junction number, because it is equal to n+sod(n) for n = 28534191 and 28534200.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 34779 + ... + 35589.

Almost surely, 2^28534224 is an apocalyptic number.

28534224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28534224 is an abundant number, since it is smaller than the sum of its proper divisors (45370768).

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

28534224 is a wasteful number, since it uses less digits than its factorization.

28534224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 1549 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 28534224 is about 5341.7435355884. The cubic root of 28534224 is about 305.5779563424.

The spelling of 28534224 in words is "twenty-eight million, five hundred thirty-four thousand, two hundred twenty-four".