128229306 has 8 divisors (see below), whose sum is σ = 256458624. Its totient is φ = 42743100.

The previous prime is 128229293. The next prime is 128229319. The reversal of 128229306 is 603922821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128229293) and next prime (128229319).

It is a sphenic number, since it is the product of 3 distinct primes.

128229306 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10685770 + ... + 10685781.

It is an arithmetic number, because the mean of its divisors is an integer number (32057328).

Almost surely, 2^128229306 is an apocalyptic number.

128229306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128229306 is a wasteful number, since it uses less digits than its factorization.

128229306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21371556.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 128229306 is about 11323.8379536269. The cubic root of 128229306 is about 504.2691856938.

The spelling of 128229306 in words is "one hundred twenty-eight million, two hundred twenty-nine thousand, three hundred six".