128074222 has 4 divisors (see below), whose sum is σ = 192111336. Its totient is φ = 64037110.

The previous prime is 128074213. The next prime is 128074223. The reversal of 128074222 is 222470821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222470821 = 223 ⋅997627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128074223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32018554 + ... + 32018557.

It is an arithmetic number, because the mean of its divisors is an integer number (48027834).

Almost surely, 2^128074222 is an apocalyptic number.

128074222 is a deficient number, since it is larger than the sum of its proper divisors (64037114).

128074222 is an equidigital number, since it uses as much as digits as its factorization.

128074222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64037113.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 128074222 is about 11316.9882035814. The cubic root of 128074222 is about 504.0658114069.

The spelling of 128074222 in words is "one hundred twenty-eight million, seventy-four thousand, two hundred twenty-two".