216453898 has 8 divisors (see below), whose sum is σ = 325719108. Its totient is φ = 107880864.

The previous prime is 216453893. The next prime is 216453899. The reversal of 216453898 is 898354612.

216453898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 202293729 + 14160169 = 14223^2 + 3763^2 .

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 (216453893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172261 + ... + 173512.

Almost surely, 2^216453898 is an apocalyptic number.

216453898 is a deficient number, since it is larger than the sum of its proper divisors (109265210).

216453898 is a wasteful number, since it uses less digits than its factorization.

216453898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346088.

The product of its digits is 414720, while the sum is 46.

The square root of 216453898 is about 14712.3722764210. The cubic root of 216453898 is about 600.4199818827.

The spelling of 216453898 in words is "two hundred sixteen million, four hundred fifty-three thousand, eight hundred ninety-eight".