128625336 has 48 divisors (see below), whose sum is σ = 398127600. Its totient is φ = 36749952.

The previous prime is 128625331. The next prime is 128625347. The reversal of 128625336 is 633526821.

It is a happy number.

128625336 is a `hidden beast` number, since 1 + 28 + 625 + 3 + 3 + 6 = 666.

It is a super-2 number, since 2×128625336² = 33088954122225792, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 128625336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128625331) 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, 127101 + ... + 128108.

It is an arithmetic number, because the mean of its divisors is an integer number (8294325).

Almost surely, 2^128625336 is an apocalyptic number.

It is an amenable number.

128625336 is an abundant number, since it is smaller than the sum of its proper divisors (269502264).

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

128625336 is a wasteful number, since it uses less digits than its factorization.

128625336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255228 (or 255221 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 128625336 is about 11341.3110353257. The cubic root of 128625336 is about 504.7877891499.

The spelling of 128625336 in words is "one hundred twenty-eight million, six hundred twenty-five thousand, three hundred thirty-six".