216443960 has 16 divisors (see below), whose sum is σ = 486999000. Its totient is φ = 86577568.

The previous prime is 216443959. The next prime is 216443999. The reversal of 216443960 is 69344612.

216443960 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 216443960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2705510 + ... + 2705589.

Almost surely, 2^216443960 is an apocalyptic number.

216443960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216443960 is an abundant number, since it is smaller than the sum of its proper divisors (270555040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216443960 is a wasteful number, since it uses less digits than its factorization.

216443960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411110 (or 5411106 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 216443960 is about 14712.0345295952. The cubic root of 216443960 is about 600.4107927587.

The spelling of 216443960 in words is "two hundred sixteen million, four hundred forty-three thousand, nine hundred sixty".