128227298 has 4 divisors (see below), whose sum is σ = 192340950. Its totient is φ = 64113648.

The previous prime is 128227291. The next prime is 128227303. The reversal of 128227298 is 892722821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 892722821 = 523 ⋅1706927.

It can be written as a sum of positive squares in only one way, i.e., 64754209 + 63473089 = 8047^2 + 7967^2 .

It is not an unprimeable number, because it can be changed into a prime (128227291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32056823 + ... + 32056826.

Almost surely, 2^128227298 is an apocalyptic number.

128227298 is a deficient number, since it is larger than the sum of its proper divisors (64113652).

128227298 is an equidigital number, since it uses as much as digits as its factorization.

128227298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64113651.

The product of its digits is 64512, while the sum is 41.

The square root of 128227298 is about 11323.7492907605. The cubic root of 128227298 is about 504.2665534879.

The spelling of 128227298 in words is "one hundred twenty-eight million, two hundred twenty-seven thousand, two hundred ninety-eight".