128115252 has 36 divisors (see below), whose sum is σ = 340893280. Its totient is φ = 40457232.

The previous prime is 128115223. The next prime is 128115277. The reversal of 128115252 is 252511821.

It is a happy number.

128115252 is a `hidden beast` number, since 128 + 11 + 525 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 92968 + ... + 94335.

Almost surely, 2^128115252 is an apocalyptic number.

128115252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128115252 is an abundant number, since it is smaller than the sum of its proper divisors (212778028).

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

128115252 is a wasteful number, since it uses less digits than its factorization.

128115252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187332 (or 187327 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 128115252 is about 11318.8008198749. The cubic root of 128115252 is about 504.1196333542.

The spelling of 128115252 in words is "one hundred twenty-eight million, one hundred fifteen thousand, two hundred fifty-two".