216000458 has 4 divisors (see below), whose sum is σ = 324000690. Its totient is φ = 108000228.

The previous prime is 216000431. The next prime is 216000461. The reversal of 216000458 is 854000612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 200024449 + 15976009 = 14143^2 + 3997^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54000113 + ... + 54000116.

Almost surely, 2^216000458 is an apocalyptic number.

216000458 is a deficient number, since it is larger than the sum of its proper divisors (108000232).

216000458 is a wasteful number, since it uses less digits than its factorization.

216000458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108000231.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 216000458 is about 14696.9540381672. The cubic root of 216000458 is about 600.0004240738. Note that the first 3 decimals are identical.

The spelling of 216000458 in words is "two hundred sixteen million, four hundred fifty-eight", and thus it is an aban number.