20040454080 has 448 divisors, whose sum is σ = 76476026880. Its totient is φ = 4921049088.

The previous prime is 20040454069. The next prime is 20040454081. The reversal of 20040454080 is 8045404002.

20040454080 is a `hidden beast` number, since 2 + 0 + 0 + 40 + 4 + 540 + 80 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040454081) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 6901909 + ... + 6904811.

Almost surely, 2^20040454080 is an apocalyptic number.

20040454080 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 20040454080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38238013440).

20040454080 is an abundant number, since it is smaller than the sum of its proper divisors (56435572800).

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

20040454080 is a wasteful number, since it uses less digits than its factorization.

20040454080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993 (or 2977 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 20040454080 its reverse (8045404002), we get a palindrome (28085858082).

The spelling of 20040454080 in words is "twenty billion, forty million, four hundred fifty-four thousand, eighty".