423816 has 16 divisors (see below), whose sum is σ = 1059600. Its totient is φ = 141264.

The previous prime is 423803. The next prime is 423823. The reversal of 423816 is 618324.

It is a happy number.

423816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 17659 = 423816 / (4 + 2 + 3 + 8 + 1 + 6).

It is a nude number because it is divisible by every one of its digits.

It is one of the 548 Lynch-Bell numbers.

It is a plaindrome in base 16.

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, 8806 + ... + 8853.

It is an arithmetic number, because the mean of its divisors is an integer number (66225).

2⁴²³⁸¹⁶ is an apocalyptic number.

It is an amenable number.

423816 is an abundant number, since it is smaller than the sum of its proper divisors (635784).

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

423816 is a wasteful number, since it uses less digits than its factorization.

423816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17668 (or 17664 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 423816 is about 651.0115206354. The cubic root of 423816 is about 75.1148462702.

The spelling of 423816 in words is "four hundred twenty-three thousand, eight hundred sixteen".