16819408 has 40 divisors (see below), whose sum is σ = 34903520. Its totient is φ = 7827840.

The previous prime is 16819399. The next prime is 16819421. The reversal of 16819408 is 80491861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18091 + ... + 18997.

It is an arithmetic number, because the mean of its divisors is an integer number (872588).

Almost surely, 2^16819408 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 16819408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17451760).

16819408 is an abundant number, since it is smaller than the sum of its proper divisors (18084112).

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

16819408 is a wasteful number, since it uses less digits than its factorization.

16819408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 16819408 is about 4101.1471565892. The cubic root of 16819408 is about 256.2144199658.

The spelling of 16819408 in words is "sixteen million, eight hundred nineteen thousand, four hundred eight".