28248650 has 12 divisors (see below), whose sum is σ = 52542582. Its totient is φ = 11299440.

The previous prime is 28248643. The next prime is 28248683. The reversal of 28248650 is 5684282.

It can be written as a sum of positive squares in 3 ways, for example, as 11854249 + 16394401 = 3443^2 + 4049^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28248650.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282437 + ... + 282536.

Almost surely, 2^28248650 is an apocalyptic number.

28248650 is a deficient number, since it is larger than the sum of its proper divisors (24293932).

28248650 is a wasteful number, since it uses less digits than its factorization.

28248650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564985 (or 564980 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 28248650 is about 5314.9459075328. The cubic root of 28248650 is about 304.5551159710. Note that the first 3 decimals are identical.

The spelling of 28248650 in words is "twenty-eight million, two hundred forty-eight thousand, six hundred fifty".