128319226 has 32 divisors (see below), whose sum is σ = 224340480. Its totient is φ = 53913600.

The previous prime is 128319203. The next prime is 128319227. The reversal of 128319226 is 622913821.

It is a super-2 number, since 2×128319226² = 32931647522478152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128319191 and 128319200.

It is not an unprimeable number, because it can be changed into a prime (128319227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199866 + ... + 200506.

It is an arithmetic number, because the mean of its divisors is an integer number (7010640).

Almost surely, 2^128319226 is an apocalyptic number.

128319226 is a deficient number, since it is larger than the sum of its proper divisors (96021254).

128319226 is a wasteful number, since it uses less digits than its factorization.

128319226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its digits is 10368, while the sum is 34.

The square root of 128319226 is about 11327.8076431408. The cubic root of 128319226 is about 504.3870300246.

The spelling of 128319226 in words is "one hundred twenty-eight million, three hundred nineteen thousand, two hundred twenty-six".