20002220388 has 72 divisors (see below), whose sum is σ = 53986540608. Its totient is φ = 6229194048.

The previous prime is 20002220351. The next prime is 20002220389. The reversal of 20002220388 is 88302220002.

It is not an unprimeable number, because it can be changed into a prime (20002220389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245295 + ... + 316502.

It is an arithmetic number, because the mean of its divisors is an integer number (749813064).

Almost surely, 2^20002220388 is an apocalyptic number.

It is an amenable number.

20002220388 is an abundant number, since it is smaller than the sum of its proper divisors (33984320220).

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

20002220388 is a wasteful number, since it uses less digits than its factorization.

20002220388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561873 (or 561868 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 20002220388 in words is "twenty billion, two million, two hundred twenty thousand, three hundred eighty-eight".