20416080 has 80 divisors (see below), whose sum is σ = 63728064. Its totient is φ = 5406720.

The previous prime is 20416063. The next prime is 20416093. The reversal of 20416080 is 8061402.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61515 + ... + 61845.

Almost surely, 2^20416080 is an apocalyptic number.

20416080 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 20416080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31864032).

20416080 is an abundant number, since it is smaller than the sum of its proper divisors (43311984).

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

20416080 is a wasteful number, since it uses less digits than its factorization.

20416080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20416080 is about 4518.4156515310. The cubic root of 20416080 is about 273.3112150785.

Adding to 20416080 its reverse (8061402), we get a palindrome (28477482).

The spelling of 20416080 in words is "twenty million, four hundred sixteen thousand, eighty".