28054500 has 96 divisors (see below), whose sum is σ = 83341440. Its totient is φ = 7331200.

The previous prime is 28054493. The next prime is 28054501. The reversal of 28054500 is 545082.

It is not an unprimeable number, because it can be changed into a prime (28054501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88342 + ... + 88658.

It is an arithmetic number, because the mean of its divisors is an integer number (868140).

Almost surely, 2^28054500 is an apocalyptic number.

28054500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28054500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41670720).

28054500 is an abundant number, since it is smaller than the sum of its proper divisors (55286940).

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

28054500 is a wasteful number, since it uses less digits than its factorization.

28054500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 28054500 is about 5296.6498845969. The cubic root of 28054500 is about 303.8557862837.

Adding to 28054500 its reverse (545082), we get a palindrome (28599582).

The spelling of 28054500 in words is "twenty-eight million, fifty-four thousand, five hundred".