128222347 has 16 divisors (see below), whose sum is σ = 148716000. Its totient is φ = 109258240.

The previous prime is 128222333. The next prime is 128222359. The reversal of 128222347 is 743222821.

It is a cyclic number.

It is not a de Polignac number, because 128222347 - 2⁷ = 128222219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128222327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49029 + ... + 51577.

It is an arithmetic number, because the mean of its divisors is an integer number (9294750).

Almost surely, 2^128222347 is an apocalyptic number.

128222347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

128222347 is a deficient number, since it is larger than the sum of its proper divisors (20493653).

128222347 is a wasteful number, since it uses less digits than its factorization.

128222347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its digits is 10752, while the sum is 31.

The square root of 128222347 is about 11323.5306773109. The cubic root of 128222347 is about 504.2600633050.

The spelling of 128222347 in words is "one hundred twenty-eight million, two hundred twenty-two thousand, three hundred forty-seven".