128947208 has 16 divisors (see below), whose sum is σ = 260374380. Its totient is φ = 59514048.

The previous prime is 128947207. The next prime is 128947237. The reversal of 128947208 is 802749821.

It can be written as a sum of positive squares in 2 ways, for example, as 128097124 + 850084 = 11318^2 + 922^2 .

It is not an unprimeable number, because it can be changed into a prime (128947201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619835 + ... + 620042.

Almost surely, 2^128947208 is an apocalyptic number.

It is an amenable number.

128947208 is an abundant number, since it is smaller than the sum of its proper divisors (131427172).

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

128947208 is a wasteful number, since it uses less digits than its factorization.

128947208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239896 (or 1239892 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 128947208 is about 11355.4924155670. The cubic root of 128947208 is about 505.2084986848.

It can be divided in two parts, 12894 and 7208, that added together give a palindrome (20102).

The spelling of 128947208 in words is "one hundred twenty-eight million, nine hundred forty-seven thousand, two hundred eight".