216319484 has 24 divisors (see below), whose sum is σ = 402973200. Its totient is φ = 101312640.

The previous prime is 216319469. The next prime is 216319489. The reversal of 216319484 is 484913612.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216319489) 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, 9227 + ... + 22754.

It is an arithmetic number, because the mean of its divisors is an integer number (16790550).

Almost surely, 2^216319484 is an apocalyptic number.

It is an amenable number.

216319484 is a deficient number, since it is larger than the sum of its proper divisors (186653716).

216319484 is a wasteful number, since it uses less digits than its factorization.

216319484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32093 (or 32091 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 216319484 is about 14707.8035069823. The cubic root of 216319484 is about 600.2956727906.

The spelling of 216319484 in words is "two hundred sixteen million, three hundred nineteen thousand, four hundred eighty-four".