128636528 has 10 divisors (see below), whose sum is σ = 249233304. Its totient is φ = 64318256.

The previous prime is 128636513. The next prime is 128636533. The reversal of 128636528 is 825636821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4019876 + ... + 4019907.

Almost surely, 2^128636528 is an apocalyptic number.

It is an amenable number.

128636528 is a deficient number, since it is larger than the sum of its proper divisors (120596776).

128636528 is an equidigital number, since it uses as much as digits as its factorization.

128636528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8039791 (or 8039785 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 128636528 is about 11341.8044419748. The cubic root of 128636528 is about 504.8024296587.

It can be divided in two parts, 12863 and 6528, that added together give a palindrome (19391).

The spelling of 128636528 in words is "one hundred twenty-eight million, six hundred thirty-six thousand, five hundred twenty-eight".