128892226 has 8 divisors (see below), whose sum is σ = 196615440. Its totient is φ = 63353748.

The previous prime is 128892217. The next prime is 128892229. The reversal of 128892226 is 622298821.

It is a happy number.

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

It is a super-4 number, since 4×128892226⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (128892229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546036 + ... + 546271.

It is an arithmetic number, because the mean of its divisors is an integer number (24576930).

Almost surely, 2^128892226 is an apocalyptic number.

128892226 is a deficient number, since it is larger than the sum of its proper divisors (67723214).

128892226 is a wasteful number, since it uses less digits than its factorization.

128892226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092368.

The product of its digits is 55296, while the sum is 40.

The square root of 128892226 is about 11353.0712144336. The cubic root of 128892226 is about 505.1366829316.

The spelling of 128892226 in words is "one hundred twenty-eight million, eight hundred ninety-two thousand, two hundred twenty-six".