128365308 has 36 divisors (see below), whose sum is σ = 326370408. Its totient is φ = 42539040.

The previous prime is 128365291. The next prime is 128365309. The reversal of 128365308 is 803563821.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128365309) 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 11 ways as a sum of consecutive naturals, for example, 4078 + ... + 16533.

Almost surely, 2^128365308 is an apocalyptic number.

128365308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128365308 is an abundant number, since it is smaller than the sum of its proper divisors (198005100).

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

128365308 is a wasteful number, since it uses less digits than its factorization.

128365308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20794 (or 20789 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 128365308 is about 11329.8414816801. The cubic root of 128365308 is about 504.4474012878.

The spelling of 128365308 in words is "one hundred twenty-eight million, three hundred sixty-five thousand, three hundred eight".