216140 has 24 divisors (see below), whose sum is σ = 462672. Its totient is φ = 84800.

The previous prime is 216133. The next prime is 216149. The reversal of 216140 is 41612.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216140.

It is not an unprimeable number, because it can be changed into a prime (216149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (19278).

2²¹⁶¹⁴⁰ is an apocalyptic number.

216140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216140 is an abundant number, since it is smaller than the sum of its proper divisors (246532).

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

216140 is a wasteful number, since it uses less digits than its factorization.

216140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 216140 is about 464.9085931664. The cubic root of 216140 is about 60.0129601633.

Adding to 216140 its reverse (41612), we get a palindrome (257752).

The spelling of 216140 in words is "two hundred sixteen thousand, one hundred forty".