226138855320828 has 72 divisors (see below), whose sum is σ = 586395823501488. Its totient is φ = 73441146417408.

The previous prime is 226138855320817. The next prime is 226138855320863. The reversal of 226138855320828 is 828023558831622.

226138855320828 is a `hidden beast` number, since 2 + 2 + 6 + 1 + 38 + 8 + 553 + 20 + 8 + 28 = 666.

It is a super-2 number, since 2×226138855320828² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183371001 + ... + 184600112.

Almost surely, 2^{226138855320828} is an apocalyptic number.

It is an amenable number.

226138855320828 is an abundant number, since it is smaller than the sum of its proper divisors (360256968180660).

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

226138855320828 is a wasteful number, since it uses less digits than its factorization.

226138855320828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367971563 (or 367971558 counting only the distinct ones).

The product of its (nonzero) digits is 88473600, while the sum is 63.

The spelling of 226138855320828 in words is "two hundred twenty-six trillion, one hundred thirty-eight billion, eight hundred fifty-five million, three hundred twenty thousand, eight hundred twenty-eight".