28634250 has 64 divisors (see below), whose sum is σ = 72588672. Its totient is φ = 7516800.

The previous prime is 28634219. The next prime is 28634251. The reversal of 28634250 is 5243682.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (28634251) 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 in 31 ways as a sum of consecutive naturals, for example, 54489 + ... + 55011.

It is an arithmetic number, because the mean of its divisors is an integer number (1134198).

Almost surely, 2^28634250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28634250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36294336).

28634250 is an abundant number, since it is smaller than the sum of its proper divisors (43954422).

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

28634250 is a wasteful number, since it uses less digits than its factorization.

28634250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 28634250 is about 5351.0980181641. The cubic root of 28634250 is about 305.9346051891.

The spelling of 28634250 in words is "twenty-eight million, six hundred thirty-four thousand, two hundred fifty".