216887000 has 64 divisors (see below), whose sum is σ = 553681440. Its totient is φ = 78864000.

The previous prime is 216886993. The next prime is 216887023. The reversal of 216887000 is 788612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1142 + ... + 20858.

Almost surely, 2^216887000 is an apocalyptic number.

216887000 is a gapful number since it is divisible by the number (20) 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 216887000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276840720).

216887000 is an abundant number, since it is smaller than the sum of its proper divisors (336794440).

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

216887000 is a wasteful number, since it uses less digits than its factorization.

216887000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19749 (or 19735 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 216887000 is about 14727.0838932899. The cubic root of 216887000 is about 600.8201746414.

The spelling of 216887000 in words is "two hundred sixteen million, eight hundred eighty-seven thousand".