28368450 has 108 divisors (see below), whose sum is σ = 83936034. Its totient is φ = 6864000.

The previous prime is 28368437. The next prime is 28368469. The reversal of 28368450 is 5486382.

It can be written as a sum of positive squares in 3 ways, for example, as 18122049 + 10246401 = 4257^2 + 3201^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 54190 + ... + 54710.

Almost surely, 2^28368450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28368450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41968017).

28368450 is an abundant number, since it is smaller than the sum of its proper divisors (55567584).

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

28368450 is a wasteful number, since it uses less digits than its factorization.

28368450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 28368450 is about 5326.2040892178. The cubic root of 28368450 is about 304.9850391300.

The spelling of 28368450 in words is "twenty-eight million, three hundred sixty-eight thousand, four hundred fifty".