128646252 has 48 divisors (see below), whose sum is σ = 381176320. Its totient is φ = 36755856.

The previous prime is 128646251. The next prime is 128646281. The reversal of 128646252 is 252646821.

It is a happy number.

128646252 is a `hidden beast` number, since 1 + 2 + 8 + 646 + 2 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (128646251) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 84328 + ... + 85839.

Almost surely, 2^128646252 is an apocalyptic number.

128646252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128646252 is an abundant number, since it is smaller than the sum of its proper divisors (252530068).

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

128646252 is a wasteful number, since it uses less digits than its factorization.

128646252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170187 (or 170179 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 128646252 is about 11342.2331134570. The cubic root of 128646252 is about 504.8151491540.

The spelling of 128646252 in words is "one hundred twenty-eight million, six hundred forty-six thousand, two hundred fifty-two".