28657586370 has 128 divisors (see below), whose sum is σ = 81899569152. Its totient is φ = 6279609600.

The previous prime is 28657586327. The next prime is 28657586429. The reversal of 28657586370 is 7368575682.

It is a self number, because there is not a number n which added to its sum of digits gives 28657586370.

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 63 ways as a sum of consecutive naturals, for example, 676000 + ... + 717140.

It is an arithmetic number, because the mean of its divisors is an integer number (639840384).

Almost surely, 2^28657586370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28657586370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40949784576).

28657586370 is an abundant number, since it is smaller than the sum of its proper divisors (53241982782).

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

28657586370 is a wasteful number, since it uses less digits than its factorization.

28657586370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41296.

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 28657586370 in words is "twenty-eight billion, six hundred fifty-seven million, five hundred eighty-six thousand, three hundred seventy".