28657586372 has 24 divisors (see below), whose sum is σ = 50379634200. Its totient is φ = 14263545600.

The previous prime is 28657586327. The next prime is 28657586429. The reversal of 28657586372 is 27368575682.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15973420996 + 12684165376 = 126386^2 + 112624^2 .

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 7 ways as a sum of consecutive naturals, for example, 821918 + ... + 856074.

It is an arithmetic number, because the mean of its divisors is an integer number (2099151425).

Almost surely, 2^28657586372 is an apocalyptic number.

It is an amenable number.

28657586372 is a deficient number, since it is larger than the sum of its proper divisors (21722047828).

28657586372 is a wasteful number, since it uses less digits than its factorization.

28657586372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35111 (or 35109 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 59.

The spelling of 28657586372 in words is "twenty-eight billion, six hundred fifty-seven million, five hundred eighty-six thousand, three hundred seventy-two".