216883522 has 8 divisors (see below), whose sum is σ = 333260172. Its totient is φ = 105796800.

The previous prime is 216883493. The next prime is 216883523. The reversal of 216883522 is 225388612.

It can be written as a sum of positive squares in 2 ways, for example, as 179318881 + 37564641 = 13391^2 + 6129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (216883523) 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, 1322379 + ... + 1322542.

Almost surely, 2^216883522 is an apocalyptic number.

216883522 is a deficient number, since it is larger than the sum of its proper divisors (116376650).

216883522 is a wasteful number, since it uses less digits than its factorization.

216883522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644964.

The product of its digits is 46080, while the sum is 37.

The square root of 216883522 is about 14726.9658110556. The cubic root of 216883522 is about 600.8169630400.

The spelling of 216883522 in words is "two hundred sixteen million, eight hundred eighty-three thousand, five hundred twenty-two".