28606724647872 has 224 divisors, whose sum is σ = 91276402867200. Its totient is φ = 7730143567872.

The previous prime is 28606724647867. The next prime is 28606724647903. The reversal of 28606724647872 is 27874642760682.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a junction number, because it is equal to n+sod(n) for n = 28606724647797 and 28606724647806.

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 31 ways as a sum of consecutive naturals, for example, 2447847 + ... + 7950182.

Almost surely, 2^{28606724647872} is an apocalyptic number.

It is an amenable number.

28606724647872 is an abundant number, since it is smaller than the sum of its proper divisors (62669678219328).

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

28606724647872 is a wasteful number, since it uses less digits than its factorization.

28606724647872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10398163 (or 10398153 counting only the distinct ones).

The product of its (nonzero) digits is 606928896, while the sum is 69.

The spelling of 28606724647872 in words is "twenty-eight trillion, six hundred six billion, seven hundred twenty-four million, six hundred forty-seven thousand, eight hundred seventy-two".