216000140 has 12 divisors (see below), whose sum is σ = 453600336. Its totient is φ = 86400048.

The previous prime is 216000139. The next prime is 216000179. The reversal of 216000140 is 41000612.

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 3 ways as a sum of consecutive naturals, for example, 5399984 + ... + 5400023.

It is an arithmetic number, because the mean of its divisors is an integer number (37800028).

Almost surely, 2^216000140 is an apocalyptic number.

216000140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216000140 is an abundant number, since it is smaller than the sum of its proper divisors (237600196).

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

216000140 is a wasteful number, since it uses less digits than its factorization.

216000140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10800016 (or 10800014 counting only the distinct ones).

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

The square root of 216000140 is about 14696.9432195950. The cubic root of 216000140 is about 600.0001296296. Note that the first 3 decimals are identical.

Adding to 216000140 its reverse (41000612), we get a palindrome (257000752).

The spelling of 216000140 in words is "two hundred sixteen million, one hundred forty", and thus it is an aban number.