28905552000 has 512 divisors, whose sum is σ = 114680966400. Its totient is φ = 7113830400.

The previous prime is 28905551999. The next prime is 28905552001. The reversal of 28905552000 is 25550982.

28905552000 is a `hidden beast` number, since 2 + 89 + 0 + 55 + 520 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (28905551999) and next prime (28905552001).

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 (28905552001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5613427 + ... + 5618573.

Almost surely, 2^28905552000 is an apocalyptic number.

28905552000 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 28905552000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57340483200).

28905552000 is an abundant number, since it is smaller than the sum of its proper divisors (85775414400).

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

28905552000 is a wasteful number, since it uses less digits than its factorization.

28905552000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198 (or 5170 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 28905552000 in words is "twenty-eight billion, nine hundred five million, five hundred fifty-two thousand".