128836226 has 8 divisors (see below), whose sum is σ = 203425680. Its totient is φ = 61027668.

The previous prime is 128836223. The next prime is 128836229. The reversal of 128836226 is 622638821.

It is an interprime number because it is at equal distance from previous prime (128836223) and next prime (128836229).

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 3390427 = 128836226 / (1 + 2 + 8 + 8 + 3 + 6 + 2 + 2 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 128836226.

It is not an unprimeable number, because it can be changed into a prime (128836223) 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, 1695176 + ... + 1695251.

It is an arithmetic number, because the mean of its divisors is an integer number (25428210).

Almost surely, 2^128836226 is an apocalyptic number.

128836226 is a deficient number, since it is larger than the sum of its proper divisors (74589454).

128836226 is a wasteful number, since it uses less digits than its factorization.

128836226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390448.

The product of its digits is 55296, while the sum is 38.

The square root of 128836226 is about 11350.6046534975. The cubic root of 128836226 is about 505.0635165019.

The spelling of 128836226 in words is "one hundred twenty-eight million, eight hundred thirty-six thousand, two hundred twenty-six".