216276556 has 12 divisors (see below), whose sum is σ = 379061200. Its totient is φ = 107973360.

The previous prime is 216276547. The next prime is 216276559. The reversal of 216276556 is 655672612.

It is a super-2 number, since 2×216276556² = 93551097350442272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216276559) by changing a digit.

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, 38256 + ... + 43543.

Almost surely, 2^216276556 is an apocalyptic number.

It is an amenable number.

216276556 is a deficient number, since it is larger than the sum of its proper divisors (162784644).

216276556 is a wasteful number, since it uses less digits than its factorization.

216276556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82464 (or 82462 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 216276556 is about 14706.3440732223. The cubic root of 216276556 is about 600.2559611613.

The spelling of 216276556 in words is "two hundred sixteen million, two hundred seventy-six thousand, five hundred fifty-six".