216468054 has 24 divisors (see below), whose sum is σ = 511652232. Its totient is φ = 65596320.

The previous prime is 216468053. The next prime is 216468061. The reversal of 216468054 is 450864612.

216468054 is a `hidden beast` number, since 2 + 1 + 646 + 8 + 0 + 5 + 4 = 666.

216468054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×216468054⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216468053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546439 + ... + 546834.

It is an arithmetic number, because the mean of its divisors is an integer number (21318843).

Almost surely, 2^216468054 is an apocalyptic number.

216468054 is an abundant number, since it is smaller than the sum of its proper divisors (295184178).

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

216468054 is a wasteful number, since it uses less digits than its factorization.

216468054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093292 (or 1093289 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 216468054 is about 14712.8533602425. The cubic root of 216468054 is about 600.4330706744.

The spelling of 216468054 in words is "two hundred sixteen million, four hundred sixty-eight thousand, fifty-four".