28059398564 has 6 divisors (see below), whose sum is σ = 49103947494. Its totient is φ = 14029699280.

The previous prime is 28059398537. The next prime is 28059398567. The reversal of 28059398564 is 46589395082.

It can be written as a sum of positive squares in only one way, i.e., 25469606464 + 2589792100 = 159592^2 + 50890^2 .

It is not an unprimeable number, because it can be changed into a prime (28059398567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3507424817 + ... + 3507424824.

It is an arithmetic number, because the mean of its divisors is an integer number (8183991249).

Almost surely, 2^28059398564 is an apocalyptic number.

It is an amenable number.

28059398564 is a deficient number, since it is larger than the sum of its proper divisors (21044548930).

28059398564 is a wasteful number, since it uses less digits than its factorization.

28059398564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7014849645 (or 7014849643 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 59.

The spelling of 28059398564 in words is "twenty-eight billion, fifty-nine million, three hundred ninety-eight thousand, five hundred sixty-four".