28454250 has 64 divisors (see below), whose sum is σ = 77500800. Its totient is φ = 6896000.

The previous prime is 28454227. The next prime is 28454263. The reversal of 28454250 is 5245482.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 6526 + ... + 9974.

It is an arithmetic number, because the mean of its divisors is an integer number (1210950).

Almost surely, 2^28454250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28454250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38750400).

28454250 is an abundant number, since it is smaller than the sum of its proper divisors (49046550).

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

28454250 is a wasteful number, since it uses less digits than its factorization.

28454250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480 (or 3470 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 28454250 is about 5334.2525249561. The cubic root of 28454250 is about 305.2922040649.

The spelling of 28454250 in words is "twenty-eight million, four hundred fifty-four thousand, two hundred fifty".