16621248 has 112 divisors (see below), whose sum is σ = 51206400. Its totient is φ = 4660224.

The previous prime is 16621229. The next prime is 16621259. The reversal of 16621248 is 84212661.

It is a tau number, because it is divible by the number of its divisors (112).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111478 + ... + 111626.

It is an arithmetic number, because the mean of its divisors is an integer number (457200).

Almost surely, 2^16621248 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 16621248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25603200).

16621248 is an abundant number, since it is smaller than the sum of its proper divisors (34585152).

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

16621248 is a wasteful number, since it uses less digits than its factorization.

16621248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 244 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 16621248 is about 4076.9164818524. The cubic root of 16621248 is about 255.2042346890.

The spelling of 16621248 in words is "sixteen million, six hundred twenty-one thousand, two hundred forty-eight".