16616880 has 240 divisors, whose sum is σ = 67004640. Its totient is φ = 3773952.

The previous prime is 16616851. The next prime is 16616903. The reversal of 16616880 is 8861661.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×16616880² = 552241401868800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105762 + ... + 105918.

It is an arithmetic number, because the mean of its divisors is an integer number (279186).

Almost surely, 2^16616880 is an apocalyptic number.

16616880 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 16616880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33502320).

16616880 is an abundant number, since it is smaller than the sum of its proper divisors (50387760).

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

16616880 is a wasteful number, since it uses less digits than its factorization.

16616880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 16616880 is about 4076.3807476731. The cubic root of 16616880 is about 255.1818771668.

The spelling of 16616880 in words is "sixteen million, six hundred sixteen thousand, eight hundred eighty".