16216180 has 12 divisors (see below), whose sum is σ = 34054020. Its totient is φ = 6486464.

The previous prime is 16216163. The next prime is 16216223. The reversal of 16216180 is 8161261.

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 14333796 = 1372^2 + 3786^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405385 + ... + 405424.

It is an arithmetic number, because the mean of its divisors is an integer number (2837835).

Almost surely, 2^16216180 is an apocalyptic number.

16216180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16216180 is an abundant number, since it is smaller than the sum of its proper divisors (17837840).

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

16216180 is a wasteful number, since it uses less digits than its factorization.

16216180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810818 (or 810816 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 16216180 is about 4026.9318345361. The cubic root of 16216180 is about 253.1140107001.

The spelling of 16216180 in words is "sixteen million, two hundred sixteen thousand, one hundred eighty".