20002642338 has 32 divisors (see below), whose sum is σ = 46582978176. Its totient is φ = 5607209088.

The previous prime is 20002642321. The next prime is 20002642339. The reversal of 20002642338 is 83324620002.

It is not an unprimeable number, because it can be changed into a prime (20002642339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4490731 + ... + 4495182.

It is an arithmetic number, because the mean of its divisors is an integer number (1455718068).

Almost surely, 2^20002642338 is an apocalyptic number.

20002642338 is an abundant number, since it is smaller than the sum of its proper divisors (26580335838).

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

20002642338 is a wasteful number, since it uses less digits than its factorization.

20002642338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8985978.

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 20002642338 in words is "twenty billion, two million, six hundred forty-two thousand, three hundred thirty-eight".