216984126 has 32 divisors (see below), whose sum is σ = 439695360. Its totient is φ = 71378784.

The previous prime is 216984083. The next prime is 216984127. The reversal of 216984126 is 621489612.

It is a super-2 number, since 2×216984126² = 94164221871967752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216984127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295656 + ... + 296388.

It is an arithmetic number, because the mean of its divisors is an integer number (13740480).

Almost surely, 2^216984126 is an apocalyptic number.

216984126 is an abundant number, since it is smaller than the sum of its proper divisors (222711234).

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

216984126 is a wasteful number, since it uses less digits than its factorization.

216984126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its digits is 41472, while the sum is 39.

The square root of 216984126 is about 14730.3810541343. The cubic root of 216984126 is about 600.9098473766.

The spelling of 216984126 in words is "two hundred sixteen million, nine hundred eighty-four thousand, one hundred twenty-six".