216354354 has 8 divisors (see below), whose sum is σ = 432708720. Its totient is φ = 72118116.

The previous prime is 216354317. The next prime is 216354367. The reversal of 216354354 is 453453612.

216354354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

216354354 is an admirable number.

It is a Curzon 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, 18029524 + ... + 18029535.

It is an arithmetic number, because the mean of its divisors is an integer number (54088590).

Almost surely, 2^216354354 is an apocalyptic number.

216354354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

216354354 is a wasteful number, since it uses less digits than its factorization.

216354354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36059064.

The product of its digits is 43200, while the sum is 33.

The square root of 216354354 is about 14708.9888843523. The cubic root of 216354354 is about 600.3279262968.

The spelling of 216354354 in words is "two hundred sixteen million, three hundred fifty-four thousand, three hundred fifty-four".