28547017556 has 12 divisors (see below), whose sum is σ = 49966351680. Its totient is φ = 14270917080.

The previous prime is 28547017493. The next prime is 28547017573. The reversal of 28547017556 is 65571074582.

It is a super-2 number, since 2×28547017556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623036 + ... + 667283.

It is an arithmetic number, because the mean of its divisors is an integer number (4163862640).

Almost surely, 2^28547017556 is an apocalyptic number.

It is an amenable number.

28547017556 is a deficient number, since it is larger than the sum of its proper divisors (21419334124).

28547017556 is a wasteful number, since it uses less digits than its factorization.

28547017556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295854 (or 1295852 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 50.

The spelling of 28547017556 in words is "twenty-eight billion, five hundred forty-seven million, seventeen thousand, five hundred fifty-six".