423443216 has 80 divisors (see below), whose sum is σ = 965902464. Its totient is φ = 176090112.

The previous prime is 423443201. The next prime is 423443233. The reversal of 423443216 is 612344324.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547406 + ... + 548178.

Almost surely, 2^423443216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423443216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482951232).

423443216 is an abundant number, since it is smaller than the sum of its proper divisors (542459248).

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

423443216 is a wasteful number, since it uses less digits than its factorization.

423443216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 922 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 423443216 is about 20577.7359298831. The cubic root of 423443216 is about 750.9281640600.

The spelling of 423443216 in words is "four hundred twenty-three million, four hundred forty-three thousand, two hundred sixteen".