28655616000 has 576 divisors, whose sum is σ = 105998046336. Its totient is φ = 6815744000.

The previous prime is 28655615999. The next prime is 28655616019. The reversal of 28655616000 is 61655682.

It is a super-2 number, since 2×28655616000² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28655616000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 540671974 + ... + 540672026.

It is an arithmetic number, because the mean of its divisors is an integer number (184024386).

Almost surely, 2^28655616000 is an apocalyptic number.

28655616000 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 28655616000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52999023168).

28655616000 is an abundant number, since it is smaller than the sum of its proper divisors (77342430336).

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

28655616000 is an frugal number, since it uses more digits than its factorization.

28655616000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 28655616000 in words is "twenty-eight billion, six hundred fifty-five million, six hundred sixteen thousand".