28225072 has 10 divisors (see below), whose sum is σ = 54686108. Its totient is φ = 14112528.

The previous prime is 28225039. The next prime is 28225073. The reversal of 28225072 is 27052282.

It is a self number, because there is not a number n which added to its sum of digits gives 28225072.

It is not an unprimeable number, because it can be changed into a prime (28225073) by changing a digit.

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, 882018 + ... + 882049.

Almost surely, 2^28225072 is an apocalyptic number.

It is an amenable number.

28225072 is a deficient number, since it is larger than the sum of its proper divisors (26461036).

28225072 is a wasteful number, since it uses less digits than its factorization.

28225072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764075 (or 1764069 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28225072 is about 5312.7273598407. The cubic root of 28225072 is about 304.4703591267.

The spelling of 28225072 in words is "twenty-eight million, two hundred twenty-five thousand, seventy-two".