128257952 has 24 divisors (see below), whose sum is σ = 261216900. Its totient is φ = 61917184.

The previous prime is 128257939. The next prime is 128257973. The reversal of 128257952 is 259752821.

It can be written as a sum of positive squares in 2 ways, for example, as 127328656 + 929296 = 11284^2 + 964^2 .

It is an unprimeable number.

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, 68177 + ... + 70032.

Almost surely, 2^128257952 is an apocalyptic number.

It is an amenable number.

128257952 is an abundant number, since it is smaller than the sum of its proper divisors (132958948).

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

128257952 is a wasteful number, since it uses less digits than its factorization.

128257952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138248 (or 138240 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 128257952 is about 11325.1027368408. The cubic root of 128257952 is about 504.3067335836.

The spelling of 128257952 in words is "one hundred twenty-eight million, two hundred fifty-seven thousand, nine hundred fifty-two".