28705966552 has 16 divisors (see below), whose sum is σ = 53825806800. Its totient is φ = 14352418080.

The previous prime is 28705966543. The next prime is 28705966559. The reversal of 28705966552 is 25566950782.

It is a junction number, because it is equal to n+sod(n) for n = 28705966493 and 28705966502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28705966559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211474 + ... + 319582.

It is an arithmetic number, because the mean of its divisors is an integer number (3364112925).

Almost surely, 2^28705966552 is an apocalyptic number.

It is an amenable number.

28705966552 is a deficient number, since it is larger than the sum of its proper divisors (25119840248).

28705966552 is a wasteful number, since it uses less digits than its factorization.

28705966552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141306 (or 141302 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 28705966552 in words is "twenty-eight billion, seven hundred five million, nine hundred sixty-six thousand, five hundred fifty-two".