20220001984 has 56 divisors (see below), whose sum is σ = 49383480608. Its totient is φ = 7999119360.

The previous prime is 20220001981. The next prime is 20220002003. The reversal of 20220001984 is 48910002202.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (20220001981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1730097 + ... + 1741744.

It is an arithmetic number, because the mean of its divisors is an integer number (881847868).

Almost surely, 2^20220001984 is an apocalyptic number.

It is an amenable number.

20220001984 is an abundant number, since it is smaller than the sum of its proper divisors (29163478624).

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

20220001984 is a wasteful number, since it uses less digits than its factorization.

20220001984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471873 (or 3471863 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 20220001984 in words is "twenty billion, two hundred twenty million, one thousand, nine hundred eighty-four".