216353254 has 16 divisors (see below), whose sum is σ = 370052928. Its totient is φ = 93981312.

The previous prime is 216353243. The next prime is 216353257. The reversal of 216353254 is 452353612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216353257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244302 + ... + 245185.

It is an arithmetic number, because the mean of its divisors is an integer number (23128308).

Almost surely, 2^216353254 is an apocalyptic number.

216353254 is a deficient number, since it is larger than the sum of its proper divisors (153699674).

216353254 is a wasteful number, since it uses less digits than its factorization.

216353254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489519.

The product of its digits is 21600, while the sum is 31.

The square root of 216353254 is about 14708.9514922037. The cubic root of 216353254 is about 600.3269088890.

The spelling of 216353254 in words is "two hundred sixteen million, three hundred fifty-three thousand, two hundred fifty-four".