20402311422 has 64 divisors (see below), whose sum is σ = 43593984000. Its totient is φ = 6343349760.

The previous prime is 20402311417. The next prime is 20402311459. The reversal of 20402311422 is 22411320402.

It is a super-2 number, since 2×20402311422² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5498904 + ... + 5502612.

It is an arithmetic number, because the mean of its divisors is an integer number (681156000).

Almost surely, 2^20402311422 is an apocalyptic number.

20402311422 is an abundant number, since it is smaller than the sum of its proper divisors (23191672578).

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

20402311422 is a wasteful number, since it uses less digits than its factorization.

20402311422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20402311422 its reverse (22411320402), we get a palindrome (42813631824).

The spelling of 20402311422 in words is "twenty billion, four hundred two million, three hundred eleven thousand, four hundred twenty-two".