28698860439556 has 24 divisors (see below), whose sum is σ = 52870180104000. Its totient is φ = 13593204931104.

The previous prime is 28698860439551. The next prime is 28698860439577. The reversal of 28698860439556 is 65593406889682.

It is a super-2 number, since 2×28698860439556² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28698860439551) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12730696 + ... + 14814463.

It is an arithmetic number, because the mean of its divisors is an integer number (2202924171000).

Almost surely, 2^{28698860439556} is an apocalyptic number.

It is an amenable number.

28698860439556 is a deficient number, since it is larger than the sum of its proper divisors (24171319664444).

28698860439556 is a wasteful number, since it uses less digits than its factorization.

28698860439556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27558891 (or 27558889 counting only the distinct ones).

The product of its (nonzero) digits is 5374771200, while the sum is 79.

The spelling of 28698860439556 in words is "twenty-eight trillion, six hundred ninety-eight billion, eight hundred sixty million, four hundred thirty-nine thousand, five hundred fifty-six".