128853550 has 24 divisors (see below), whose sum is σ = 273906576. Its totient is φ = 44178240.

The previous prime is 128853509. The next prime is 128853551. The reversal of 128853550 is 55358821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128853551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183727 + ... + 184426.

It is an arithmetic number, because the mean of its divisors is an integer number (11412774).

Almost surely, 2^128853550 is an apocalyptic number.

128853550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128853550 is an abundant number, since it is smaller than the sum of its proper divisors (145053026).

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

128853550 is a wasteful number, since it uses less digits than its factorization.

128853550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368172 (or 368167 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 128853550 is about 11351.3677589972. The cubic root of 128853550 is about 505.0861533241.

The spelling of 128853550 in words is "one hundred twenty-eight million, eight hundred fifty-three thousand, five hundred fifty".