28081641600 has 192 divisors, whose sum is σ = 102771324000. Its totient is φ = 7488414720.

The previous prime is 28081641589. The next prime is 28081641647. The reversal of 28081641600 is 614618082.

28081641600 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 1 + 6 + 41 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

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 23 ways as a sum of consecutive naturals, for example, 76110 + ... + 248909.

Almost surely, 2^28081641600 is an apocalyptic number.

28081641600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28081641600 is an abundant number, since it is smaller than the sum of its proper divisors (74689682400).

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

28081641600 is a wasteful number, since it uses less digits than its factorization.

28081641600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325052 (or 325029 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 28081641600 in words is "twenty-eight billion, eighty-one million, six hundred forty-one thousand, six hundred".