216858700 has 18 divisors (see below), whose sum is σ = 470583596. Its totient is φ = 86743440.

The previous prime is 216858683. The next prime is 216858703. The reversal of 216858700 is 7858612.

It is a self number, because there is not a number n which added to its sum of digits gives 216858700.

It is not an unprimeable number, because it can be changed into a prime (216858703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1084194 + ... + 1084393.

Almost surely, 2^216858700 is an apocalyptic number.

216858700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216858700 is an abundant number, since it is smaller than the sum of its proper divisors (253724896).

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

216858700 is a wasteful number, since it uses less digits than its factorization.

216858700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168601 (or 2168594 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 216858700 is about 14726.1230471567. The cubic root of 216858700 is about 600.7940412931.

The spelling of 216858700 in words is "two hundred sixteen million, eight hundred fifty-eight thousand, seven hundred".