16878080 has 80 divisors (see below), whose sum is σ = 42720480. Its totient is φ = 6377472.

The previous prime is 16878079. The next prime is 16878119. The reversal of 16878080 is 8087861.

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

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48467 + ... + 48813.

It is an arithmetic number, because the mean of its divisors is an integer number (534006).

Almost surely, 2^16878080 is an apocalyptic number.

16878080 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 16878080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21360240).

16878080 is an abundant number, since it is smaller than the sum of its proper divisors (25842400).

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

16878080 is an equidigital number, since it uses as much as digits as its factorization.

16878080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 16878080 is about 4108.2940498460. The cubic root of 16878080 is about 256.5119961660.

The spelling of 16878080 in words is "sixteen million, eight hundred seventy-eight thousand, eighty".