16217868 has 48 divisors (see below), whose sum is σ = 40360320. Its totient is φ = 5053824.

The previous prime is 16217857. The next prime is 16217869. The reversal of 16217868 is 86871261.

It is not an unprimeable number, because it can be changed into a prime (16217869) 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, 18496 + ... + 19352.

It is an arithmetic number, because the mean of its divisors is an integer number (840840).

Almost surely, 2^16217868 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 16217868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20180160).

16217868 is an abundant number, since it is smaller than the sum of its proper divisors (24142452).

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

16217868 is a wasteful number, since it uses less digits than its factorization.

16217868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 964 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 16217868 is about 4027.1414179291. The cubic root of 16217868 is about 253.1227929087.

The spelling of 16217868 in words is "sixteen million, two hundred seventeen thousand, eight hundred sixty-eight".