216332016 has 20 divisors (see below), whose sum is σ = 558857832. Its totient is φ = 72110656.

The previous prime is 216331979. The next prime is 216332071. The reversal of 216332016 is 610233612.

It is a happy number.

It is a super-2 number, since 2×216332016² = 93599082293248512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 2253411 + ... + 2253506.

Almost surely, 2^216332016 is an apocalyptic number.

It is an amenable number.

216332016 is an abundant number, since it is smaller than the sum of its proper divisors (342525816).

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

216332016 is a wasteful number, since it uses less digits than its factorization.

216332016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506928 (or 4506922 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 216332016 is about 14708.2295331559. The cubic root of 216332016 is about 600.3072648426.

Adding to 216332016 its reverse (610233612), we get a palindrome (826565628).

The spelling of 216332016 in words is "two hundred sixteen million, three hundred thirty-two thousand, sixteen".