423327816 has 128 divisors (see below), whose sum is σ = 1223884800. Its totient is φ = 135432000.

The previous prime is 423327781. The next prime is 423327833. The reversal of 423327816 is 618723324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1278771 + ... + 1279101.

It is an arithmetic number, because the mean of its divisors is an integer number (9561600).

Almost surely, 2^423327816 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 423327816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611942400).

423327816 is an abundant number, since it is smaller than the sum of its proper divisors (800556984).

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

423327816 is a wasteful number, since it uses less digits than its factorization.

423327816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 558 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 423327816 is about 20574.9317374323. The cubic root of 423327816 is about 750.8599416237.

The spelling of 423327816 in words is "four hundred twenty-three million, three hundred twenty-seven thousand, eight hundred sixteen".