226309891428 has 18 divisors (see below), whose sum is σ = 572061114534. Its totient is φ = 75436630464.

The previous prime is 226309891421. The next prime is 226309891447. The reversal of 226309891428 is 824198903622.

226309891428 is a `hidden beast` number, since 226 + 309 + 8 + 91 + 4 + 28 = 666.

226309891428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 208993436964 + 17316454464 = 457158^2 + 131592^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (226309891421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3143192901 + ... + 3143192972.

Almost surely, 2^226309891428 is an apocalyptic number.

It is an amenable number.

226309891428 is an abundant number, since it is smaller than the sum of its proper divisors (345751223106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

226309891428 is a wasteful number, since it uses less digits than its factorization.

226309891428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286385883 (or 6286385878 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 226309891428 in words is "two hundred twenty-six billion, three hundred nine million, eight hundred ninety-one thousand, four hundred twenty-eight".