16218056 has 8 divisors (see below), whose sum is σ = 30408870. Its totient is φ = 8109024.

The previous prime is 16218049. The next prime is 16218079. The reversal of 16218056 is 65081261.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9796900 + 6421156 = 3130^2 + 2534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×16218056³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013621 + ... + 1013636.

Almost surely, 2^16218056 is an apocalyptic number.

It is an amenable number.

16218056 is a deficient number, since it is larger than the sum of its proper divisors (14190814).

16218056 is a wasteful number, since it uses less digits than its factorization.

16218056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027263 (or 2027259 counting only the distinct ones).

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

The square root of 16218056 is about 4027.1647594803. The cubic root of 16218056 is about 253.1237709842.

The spelling of 16218056 in words is "sixteen million, two hundred eighteen thousand, fifty-six".