16420080 has 80 divisors (see below), whose sum is σ = 52568064. Its totient is φ = 4235520.

The previous prime is 16420073. The next prime is 16420081. The reversal of 16420080 is 8002461.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420081) 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 15 ways as a sum of consecutive naturals, for example, 6337 + ... + 8543.

Almost surely, 2^16420080 is an apocalyptic number.

16420080 is a gapful number since it is divisible by the number (10) 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 16420080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26284032).

16420080 is an abundant number, since it is smaller than the sum of its proper divisors (36147984).

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

16420080 is a wasteful number, since it uses less digits than its factorization.

16420080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254 (or 2248 counting only the distinct ones).

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

The square root of 16420080 is about 4052.1697891377. The cubic root of 16420080 is about 254.1704685746.

The spelling of 16420080 in words is "sixteen million, four hundred twenty thousand, eighty".