128348222 has 4 divisors (see below), whose sum is σ = 192522336. Its totient is φ = 64174110.

The previous prime is 128348221. The next prime is 128348237. The reversal of 128348222 is 222843821.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×128348222² = 32946532181122568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128348221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32087054 + ... + 32087057.

It is an arithmetic number, because the mean of its divisors is an integer number (48130584).

Almost surely, 2^128348222 is an apocalyptic number.

128348222 is a deficient number, since it is larger than the sum of its proper divisors (64174114).

128348222 is an equidigital number, since it uses as much as digits as its factorization.

128348222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64174113.

The product of its digits is 12288, while the sum is 32.

The square root of 128348222 is about 11329.0874301508. The cubic root of 128348222 is about 504.4250188885.

The spelling of 128348222 in words is "one hundred twenty-eight million, three hundred forty-eight thousand, two hundred twenty-two".