16449648 has 40 divisors (see below), whose sum is σ = 42945168. Its totient is φ = 5425152.

The previous prime is 16449599. The next prime is 16449661. The reversal of 16449648 is 84694461.

It is a congruent number.

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, 2890 + ... + 6422.

Almost surely, 2^16449648 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 16449648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21472584).

16449648 is an abundant number, since it is smaller than the sum of its proper divisors (26495520).

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

16449648 is a wasteful number, since it uses less digits than its factorization.

16449648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641 (or 3635 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 16449648 is about 4055.8165638993. The cubic root of 16449648 is about 254.3229405465.

The spelling of 16449648 in words is "sixteen million, four hundred forty-nine thousand, six hundred forty-eight".