20424840628226 has 16 divisors (see below), whose sum is σ = 30689639680824. Its totient is φ = 10194963341184.

The previous prime is 20424840628217. The next prime is 20424840628237. The reversal of 20424840628226 is 62282604842402.

It can be written as a sum of positive squares in 4 ways, for example, as 4382805055225 + 16042035573001 = 2093515^2 + 4005251^2 .

It is a super-2 number, since 2×20424840628226² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15191366 + ... + 16481118.

Almost surely, 2^{20424840628226} is an apocalyptic number.

20424840628226 is a deficient number, since it is larger than the sum of its proper divisors (10264799052598).

20424840628226 is a wasteful number, since it uses less digits than its factorization.

20424840628226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303285.

The product of its (nonzero) digits is 4718592, while the sum is 50.

The spelling of 20424840628226 in words is "twenty trillion, four hundred twenty-four billion, eight hundred forty million, six hundred twenty-eight thousand, two hundred twenty-six".