16866448 has 40 divisors (see below), whose sum is σ = 35220960. Its totient is φ = 7795200.

The previous prime is 16866427. The next prime is 16866491. The reversal of 16866448 is 84466861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15523 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (880524).

Almost surely, 2^16866448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16866448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17610480).

16866448 is an abundant number, since it is smaller than the sum of its proper divisors (18354512).

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

16866448 is a wasteful number, since it uses less digits than its factorization.

16866448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1129 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 16866448 is about 4106.8781330836. The cubic root of 16866448 is about 256.4530551560.

The spelling of 16866448 in words is "sixteen million, eight hundred sixty-six thousand, four hundred forty-eight".