28582224 has 40 divisors (see below), whose sum is σ = 80551392. Its totient is φ = 8661120.

The previous prime is 28582199. The next prime is 28582231. The reversal of 28582224 is 42228582.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 26539 + ... + 27594.

Almost surely, 2^28582224 is an apocalyptic number.

28582224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28582224 is an abundant number, since it is smaller than the sum of its proper divisors (51969168).

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

28582224 is a wasteful number, since it uses less digits than its factorization.

28582224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54155 (or 54149 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

The square root of 28582224 is about 5346.2345627554. The cubic root of 28582224 is about 305.7492071293.

The spelling of 28582224 in words is "twenty-eight million, five hundred eighty-two thousand, two hundred twenty-four".