20020100984 has 32 divisors (see below), whose sum is σ = 40664442000. Its totient is φ = 9240038496.

The previous prime is 20020100957. The next prime is 20020100987. The reversal of 20020100984 is 48900102002.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020100987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551954 + ... + 587105.

Almost surely, 2^20020100984 is an apocalyptic number.

It is an amenable number.

20020100984 is an abundant number, since it is smaller than the sum of its proper divisors (20644341016).

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

20020100984 is a wasteful number, since it uses less digits than its factorization.

20020100984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139104 (or 1139074 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 20020100984 its reverse (48900102002), we get a palindrome (68920202986).

The spelling of 20020100984 in words is "twenty billion, twenty million, one hundred thousand, nine hundred eighty-four".