20844227406 has 32 divisors (see below), whose sum is σ = 42407428608. Its totient is φ = 6828438240.

The previous prime is 20844227401. The next prime is 20844227413. The reversal of 20844227406 is 60472244802.

It is a super-3 number, since 3×20844227406³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20844227401) 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 15 ways as a sum of consecutive naturals, for example, 424335 + ... + 470901.

It is an arithmetic number, because the mean of its divisors is an integer number (1325232144).

Almost surely, 2^20844227406 is an apocalyptic number.

20844227406 is an abundant number, since it is smaller than the sum of its proper divisors (21563201202).

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

20844227406 is a wasteful number, since it uses less digits than its factorization.

20844227406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47856.

The product of its (nonzero) digits is 172032, while the sum is 39.

The spelling of 20844227406 in words is "twenty billion, eight hundred forty-four million, two hundred twenty-seven thousand, four hundred six".