16490408 has 64 divisors (see below), whose sum is σ = 36443520. Its totient is φ = 6912000.

The previous prime is 16490407. The next prime is 16490413. The reversal of 16490408 is 80409461.

It is not an unprimeable number, because it can be changed into a prime (16490407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109133 + ... + 109283.

It is an arithmetic number, because the mean of its divisors is an integer number (569430).

Almost surely, 2^16490408 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 16490408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18221760).

16490408 is an abundant number, since it is smaller than the sum of its proper divisors (19953112).

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

16490408 is a wasteful number, since it uses less digits than its factorization.

16490408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 16490408 is about 4060.8383370925. The cubic root of 16490408 is about 254.5328265535.

Adding to 16490408 its reverse (80409461), we get a palindrome (96899869).

The spelling of 16490408 in words is "sixteen million, four hundred ninety thousand, four hundred eight".