16818408 has 32 divisors (see below), whose sum is σ = 46718400. Its totient is φ = 5606064.

The previous prime is 16818391. The next prime is 16818413. The reversal of 16818408 is 80481861.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

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, 38716 + ... + 39147.

It is an arithmetic number, because the mean of its divisors is an integer number (1459950).

Almost surely, 2^16818408 is an apocalyptic number.

16818408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16818408 is an abundant number, since it is smaller than the sum of its proper divisors (29899992).

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

16818408 is a wasteful number, since it uses less digits than its factorization.

16818408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77878 (or 77868 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 16818408 is about 4101.0252376692. The cubic root of 16818408 is about 256.2093421117.

The spelling of 16818408 in words is "sixteen million, eight hundred eighteen thousand, four hundred eight".