16516890 has 96 divisors (see below), whose sum is σ = 48746880. Its totient is φ = 3846528.

The previous prime is 16516889. The next prime is 16516919. The reversal of 16516890 is 9861561.

16516890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 21859 + ... + 22601.

It is an arithmetic number, because the mean of its divisors is an integer number (507780).

Almost surely, 2^16516890 is an apocalyptic number.

16516890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16516890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24373440).

16516890 is an abundant number, since it is smaller than the sum of its proper divisors (32229990).

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

16516890 is a wasteful number, since it uses less digits than its factorization.

16516890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 16516890 is about 4064.0976858338. The cubic root of 16516890 is about 254.6690053816.

The spelling of 16516890 in words is "sixteen million, five hundred sixteen thousand, eight hundred ninety".