28254208 has 28 divisors (see below), whose sum is σ = 56521350. Its totient is φ = 14123008.

The previous prime is 28254203. The next prime is 28254209. The reversal of 28254208 is 80245282.

It can be written as a sum of positive squares in only one way, i.e., 28217344 + 36864 = 5312^2 + 192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28254208.

It is not an unprimeable number, because it can be changed into a prime (28254203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6468 + ... + 9916.

Almost surely, 2^28254208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28254208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28260675).

28254208 is an abundant number, since it is smaller than the sum of its proper divisors (28267142).

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

28254208 is an frugal number, since it uses more digits than its factorization.

28254208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475 (or 3451 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 28254208 is about 5315.4687469686. The cubic root of 28254208 is about 304.5750886816.

The spelling of 28254208 in words is "twenty-eight million, two hundred fifty-four thousand, two hundred eight".