128854120 has 16 divisors (see below), whose sum is σ = 289921860. Its totient is φ = 51541632.

The previous prime is 128854109. The next prime is 128854127. The reversal of 128854120 is 21458821.

It can be written as a sum of positive squares in 2 ways, for example, as 112741924 + 16112196 = 10618^2 + 4014^2 .

It is not an unprimeable number, because it can be changed into a prime (128854127) 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, 1610637 + ... + 1610716.

Almost surely, 2^128854120 is an apocalyptic number.

128854120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128854120 is an abundant number, since it is smaller than the sum of its proper divisors (161067740).

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

128854120 is a wasteful number, since it uses less digits than its factorization.

128854120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221364 (or 3221360 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 128854120 is about 11351.3928660760. The cubic root of 128854120 is about 505.0868980939.

The spelling of 128854120 in words is "one hundred twenty-eight million, eight hundred fifty-four thousand, one hundred twenty".