28548900 has 54 divisors (see below), whose sum is σ = 89487762. Its totient is φ = 7612800.

The previous prime is 28548893. The next prime is 28548907. The reversal of 28548900 is 984582.

28548900 is a `hidden beast` number, since 28 + 548 + 90 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (28548893) and next prime (28548907).

It can be written as a sum of positive squares in 3 ways, for example, as 97344 + 28451556 = 312^2 + 5334^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28548907) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14961 + ... + 16760.

Almost surely, 2^28548900 is an apocalyptic number.

28548900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28548900 is an abundant number, since it is smaller than the sum of its proper divisors (60938862).

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

28548900 is a wasteful number, since it uses less digits than its factorization.

28548900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31741 (or 31731 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28548900 is about 5343.1170677798. The cubic root of 28548900 is about 305.6303366401.

The spelling of 28548900 in words is "twenty-eight million, five hundred forty-eight thousand, nine hundred".