20104943040 has 1008 divisors, whose sum is σ = 89658200160. Its totient is φ = 4226826240.

The previous prime is 20104943039. The next prime is 20104943051. The reversal of 20104943040 is 4034940102.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20104942995 and 20104943013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 71547700 + ... + 71547980.

Almost surely, 2^20104943040 is an apocalyptic number.

20104943040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20104943040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44829100080).

20104943040 is an abundant number, since it is smaller than the sum of its proper divisors (69553257120).

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

20104943040 is a wasteful number, since it uses less digits than its factorization.

20104943040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 20104943040 in words is "twenty billion, one hundred four million, nine hundred forty-three thousand, forty".