20400230022 has 32 divisors (see below), whose sum is σ = 41999392512. Its totient is φ = 6602149344.

The previous prime is 20400229987. The next prime is 20400230063. The reversal of 20400230022 is 22003200402.

It is a junction number, because it is equal to n+sod(n) for n = 20400229983 and 20400230010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193653 + ... + 279824.

It is an arithmetic number, because the mean of its divisors is an integer number (1312481016).

Almost surely, 2^20400230022 is an apocalyptic number.

20400230022 is an abundant number, since it is smaller than the sum of its proper divisors (21599162490).

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

20400230022 is a wasteful number, since it uses less digits than its factorization.

20400230022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473692.

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 20400230022 its reverse (22003200402), we get a palindrome (42403430424).

The spelling of 20400230022 in words is "twenty billion, four hundred million, two hundred thirty thousand, twenty-two".