16818768 has 30 divisors (see below), whose sum is σ = 47069594. Its totient is φ = 5606208.

The previous prime is 16818761. The next prime is 16818779. The reversal of 16818768 is 86781861.

It can be written as a sum of positive squares in only one way, i.e., 13749264 + 3069504 = 3708^2 + 1752^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16818761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58255 + ... + 58542.

Almost surely, 2^16818768 is an apocalyptic number.

16818768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16818768 is an abundant number, since it is smaller than the sum of its proper divisors (30250826).

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

16818768 is a wasteful number, since it uses less digits than its factorization.

16818768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116811 (or 116802 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 16818768 is about 4101.0691288980. The cubic root of 16818768 is about 256.2111701624.

The spelling of 16818768 in words is "sixteen million, eight hundred eighteen thousand, seven hundred sixty-eight".