216065180 has 12 divisors (see below), whose sum is σ = 453736920. Its totient is φ = 86426064.

The previous prime is 216065177. The next prime is 216065209. The reversal of 216065180 is 81560612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5401610 + ... + 5401649.

It is an arithmetic number, because the mean of its divisors is an integer number (37811410).

Almost surely, 2^216065180 is an apocalyptic number.

216065180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216065180 is an abundant number, since it is smaller than the sum of its proper divisors (237671740).

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

216065180 is a wasteful number, since it uses less digits than its factorization.

216065180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10803268 (or 10803266 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 216065180 is about 14699.1557580699. The cubic root of 216065180 is about 600.0603457823.

It can be divided in two parts, 21 and 6065180, that multiplied together give a triangular number (127368780 = T₁₅₉₆₀).

The spelling of 216065180 in words is "two hundred sixteen million, sixty-five thousand, one hundred eighty".