28058550 has 48 divisors (see below), whose sum is σ = 74943120. Its totient is φ = 6906240.

The previous prime is 28058549. The next prime is 28058557. The reversal of 28058550 is 5585082.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28058557) 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 23 ways as a sum of consecutive naturals, for example, 5245 + ... + 9144.

It is an arithmetic number, because the mean of its divisors is an integer number (1561315).

Almost surely, 2^28058550 is an apocalyptic number.

28058550 is an abundant number, since it is smaller than the sum of its proper divisors (46884570).

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

28058550 is a wasteful number, since it uses less digits than its factorization.

28058550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14417 (or 14412 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 28058550 is about 5297.0321879332. The cubic root of 28058550 is about 303.8704073097.

The spelling of 28058550 in words is "twenty-eight million, fifty-eight thousand, five hundred fifty".