28555612800 has 1152 divisors, whose sum is σ = 116810856960. Its totient is φ = 6082560000.

The previous prime is 28555612781. The next prime is 28555612819. The reversal of 28555612800 is 821655582.

It is an interprime number because it is at equal distance from previous prime (28555612781) and next prime (28555612819).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 468124770 + ... + 468124830.

Almost surely, 2^28555612800 is an apocalyptic number.

28555612800 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 28555612800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58405428480).

28555612800 is an abundant number, since it is smaller than the sum of its proper divisors (88255244160).

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

28555612800 is a wasteful number, since it uses less digits than its factorization.

28555612800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 28555612800 in words is "twenty-eight billion, five hundred fifty-five million, six hundred twelve thousand, eight hundred".