2028426804217 has 16 divisors (see below), whose sum is σ = 2272973882112. Its totient is φ = 1794357416320.

The previous prime is 2028426804191. The next prime is 2028426804221. The reversal of 2028426804217 is 7124086248202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2028426804217 - 2²³ = 2028418415609 is a prime.

It is a super-2 number, since 2×2028426804217² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2028426804017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11250028 + ... + 11428909.

It is an arithmetic number, because the mean of its divisors is an integer number (142060867632).

Almost surely, 2^{2028426804217} is an apocalyptic number.

It is an amenable number.

2028426804217 is a deficient number, since it is larger than the sum of its proper divisors (244547077895).

2028426804217 is a wasteful number, since it uses less digits than its factorization.

2028426804217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22679168.

The product of its (nonzero) digits is 688128, while the sum is 46.

The spelling of 2028426804217 in words is "two trillion, twenty-eight billion, four hundred twenty-six million, eight hundred four thousand, two hundred seventeen".