20604004120 has 48 divisors (see below), whose sum is σ = 53927832240. Its totient is φ = 7064229312.

The previous prime is 20604004117. The next prime is 20604004147. The reversal of 20604004120 is 2140040602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5254164 + ... + 5258083.

It is an arithmetic number, because the mean of its divisors is an integer number (1123496505).

Almost surely, 2^20604004120 is an apocalyptic number.

20604004120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20604004120 is an abundant number, since it is smaller than the sum of its proper divisors (33323828120).

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

20604004120 is a wasteful number, since it uses less digits than its factorization.

20604004120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10512272 (or 10512261 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20604004120 its reverse (2140040602), we get a palindrome (22744044722).

The spelling of 20604004120 in words is "twenty billion, six hundred four million, four thousand, one hundred twenty".