216483973 has 8 divisors (see below), whose sum is σ = 222051456. Its totient is φ = 210940800.

The previous prime is 216483907. The next prime is 216483997. The reversal of 216483973 is 379384612.

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

It is a de Polignac number, because none of the positive numbers 2^k-216483973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216403973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12693 + ... + 24373.

It is an arithmetic number, because the mean of its divisors is an integer number (27756432).

Almost surely, 2^216483973 is an apocalyptic number.

It is an amenable number.

216483973 is a deficient number, since it is larger than the sum of its proper divisors (5567483).

216483973 is a wasteful number, since it uses less digits than its factorization.

216483973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12155.

The product of its digits is 217728, while the sum is 43.

The square root of 216483973 is about 14713.3943398524. The cubic root of 216483973 is about 600.4477888736.

The spelling of 216483973 in words is "two hundred sixteen million, four hundred eighty-three thousand, nine hundred seventy-three".