28504803600 has 360 divisors, whose sum is σ = 121748582592. Its totient is φ = 6014131200.

The previous prime is 28504803559. The next prime is 28504803611. The reversal of 28504803600 is 630840582.

28504803600 is a `hidden beast` number, since 2 + 8 + 5 + 0 + 48 + 0 + 3 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 284095 + ... + 371105.

Almost surely, 2^28504803600 is an apocalyptic number.

28504803600 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 28504803600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60874291296).

28504803600 is an abundant number, since it is smaller than the sum of its proper divisors (93243778992).

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

28504803600 is a wasteful number, since it uses less digits than its factorization.

28504803600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87055 (or 87041 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 28504803600 in words is "twenty-eight billion, five hundred four million, eight hundred three thousand, six hundred".