226420145444 has 12 divisors (see below), whose sum is σ = 401663135244. Its totient is φ = 111659249664.

The previous prime is 226420145437. The next prime is 226420145447. The reversal of 226420145444 is 444541024622.

It can be written as a sum of positive squares in 2 ways, for example, as 58023174400 + 168396971044 = 240880^2 + 410362^2 .

It is a super-2 number, since 2×226420145444² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 226420145398 and 226420145407.

It is not an unprimeable number, because it can be changed into a prime (226420145447) 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, 387705437 + ... + 387706020.

It is an arithmetic number, because the mean of its divisors is an integer number (33471927937).

Almost surely, 2^226420145444 is an apocalyptic number.

It is an amenable number.

226420145444 is a deficient number, since it is larger than the sum of its proper divisors (175242989800).

226420145444 is a wasteful number, since it uses less digits than its factorization.

226420145444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775411534 (or 775411532 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 38.

The spelling of 226420145444 in words is "two hundred twenty-six billion, four hundred twenty million, one hundred forty-five thousand, four hundred forty-four".