20422402002 has 24 divisors (see below), whose sum is σ = 44438454684. Its totient is φ = 6778249344.

The previous prime is 20422401917. The next prime is 20422402009. The reversal of 20422402002 is 20020422402.

20422402002 is a `hidden beast` number, since 2 + 0 + 422 + 40 + 200 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19262386521 + 1160015481 = 138789^2 + 34059^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20422402009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2430523 + ... + 2438910.

Almost surely, 2^20422402002 is an apocalyptic number.

20422402002 is an abundant number, since it is smaller than the sum of its proper divisors (24016052682).

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

20422402002 is a wasteful number, since it uses less digits than its factorization.

20422402002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869674 (or 4869671 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 20422402002 its reverse (20020422402), we get a palindrome (40442824404).

The spelling of 20422402002 in words is "twenty billion, four hundred twenty-two million, four hundred two thousand, two".