216324464 has 10 divisors (see below), whose sum is σ = 419128680. Its totient is φ = 108162224.

The previous prime is 216324463. The next prime is 216324467. The reversal of 216324464 is 464423612.

216324464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216324464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216324461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760124 + ... + 6760155.

It is an arithmetic number, because the mean of its divisors is an integer number (41912868).

Almost surely, 2^216324464 is an apocalyptic number.

It is an amenable number.

216324464 is a deficient number, since it is larger than the sum of its proper divisors (202804216).

216324464 is a wasteful number, since it uses less digits than its factorization.

216324464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13520287 (or 13520281 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

The square root of 216324464 is about 14707.9728038911. The cubic root of 216324464 is about 600.3002793251.

The spelling of 216324464 in words is "two hundred sixteen million, three hundred twenty-four thousand, four hundred sixty-four".