128449035 has 48 divisors (see below), whose sum is σ = 261582048. Its totient is φ = 57484800.

The previous prime is 128449019. The next prime is 128449081. The reversal of 128449035 is 530944821.

It is not a de Polignac number, because 128449035 - 2⁴ = 128449019 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 3546 + ... + 16415.

It is an arithmetic number, because the mean of its divisors is an integer number (5449626).

Almost surely, 2^128449035 is an apocalyptic number.

128449035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128449035 is an abundant number, since it is smaller than the sum of its proper divisors (133133013).

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

128449035 is a wasteful number, since it uses less digits than its factorization.

128449035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19996 (or 19993 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 128449035 is about 11333.5358560336. The cubic root of 128449035 is about 504.5570536767.

The spelling of 128449035 in words is "one hundred twenty-eight million, four hundred forty-nine thousand, thirty-five".