16319808 has 84 divisors (see below), whose sum is σ = 48440340. Its totient is φ = 5246976.

The previous prime is 16319801. The next prime is 16319819. The reversal of 16319808 is 80891361.

It can be written as a sum of positive squares in 2 ways, for example, as 12446784 + 3873024 = 3528^2 + 1968^2 .

It is a super-2 number, since 2×16319808² = 532672266313728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16319801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16216 + ... + 17192.

Almost surely, 2^16319808 is an apocalyptic number.

16319808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16319808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24220170).

16319808 is an abundant number, since it is smaller than the sum of its proper divisors (32120532).

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

16319808 is a wasteful number, since it uses less digits than its factorization.

16319808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 16319808 is about 4039.7782117339. The cubic root of 16319808 is about 253.6520334937.

The spelling of 16319808 in words is "sixteen million, three hundred nineteen thousand, eight hundred eight".