28336686632 has 8 divisors (see below), whose sum is σ = 53131287450. Its totient is φ = 14168343312.

The previous prime is 28336686601. The next prime is 28336686643. The reversal of 28336686632 is 23668663382.

It can be written as a sum of positive squares in only one way, i.e., 26645338756 + 1691347876 = 163234^2 + 41126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1771042907 + ... + 1771042922.

Almost surely, 2^28336686632 is an apocalyptic number.

It is an amenable number.

28336686632 is a deficient number, since it is larger than the sum of its proper divisors (24794600818).

28336686632 is a wasteful number, since it uses less digits than its factorization.

28336686632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542085835 (or 3542085831 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 53.

The spelling of 28336686632 in words is "twenty-eight billion, three hundred thirty-six million, six hundred eighty-six thousand, six hundred thirty-two".