28500460 has 24 divisors (see below), whose sum is σ = 60747120. Its totient is φ = 11229504.

The previous prime is 28500401. The next prime is 28500463. The reversal of 28500460 is 6400582.

It is not an unprimeable number, because it can be changed into a prime (28500463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9295 + ... + 11974.

It is an arithmetic number, because the mean of its divisors is an integer number (2531130).

Almost surely, 2^28500460 is an apocalyptic number.

28500460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28500460 is an abundant number, since it is smaller than the sum of its proper divisors (32246660).

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

28500460 is a wasteful number, since it uses less digits than its factorization.

28500460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21345 (or 21343 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28500460 is about 5338.5822087891. The cubic root of 28500460 is about 305.4573805932.

The spelling of 28500460 in words is "twenty-eight million, five hundred thousand, four hundred sixty".