28560665070 has 128 divisors (see below), whose sum is σ = 87480576000. Its totient is φ = 6495261696.

The previous prime is 28560665017. The next prime is 28560665099. The reversal of 28560665070 is 7056606582.

28560665070 is a `hidden beast` number, since 2 + 85 + 6 + 0 + 66 + 507 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338142 + ... + 414078.

It is an arithmetic number, because the mean of its divisors is an integer number (683442000).

Almost surely, 2^28560665070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28560665070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43740288000).

28560665070 is an abundant number, since it is smaller than the sum of its proper divisors (58919910930).

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

28560665070 is a wasteful number, since it uses less digits than its factorization.

28560665070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76159 (or 76153 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 28560665070 in words is "twenty-eight billion, five hundred sixty million, six hundred sixty-five thousand, seventy".