216456846 has 8 divisors (see below), whose sum is σ = 432913704. Its totient is φ = 72152280.

The previous prime is 216456809. The next prime is 216456847. The reversal of 216456846 is 648654612.

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

216456846 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 216456798 and 216456807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216456847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18038065 + ... + 18038076.

It is an arithmetic number, because the mean of its divisors is an integer number (54114213).

Almost surely, 2^216456846 is an apocalyptic number.

216456846 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.

216456846 is a wasteful number, since it uses less digits than its factorization.

216456846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36076146.

The product of its digits is 276480, while the sum is 42.

The square root of 216456846 is about 14712.4724638655. The cubic root of 216456846 is about 600.4227076826.

The spelling of 216456846 in words is "two hundred sixteen million, four hundred fifty-six thousand, eight hundred forty-six".