423388 has 12 divisors (see below), whose sum is σ = 846832. Its totient is φ = 181440.

The previous prime is 423347. The next prime is 423389. The reversal of 423388 is 883324.

423388 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 15121 = 423388 / (4 + 2 + 3 + 3 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423389) by changing a digit.

423388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7533 + ... + 7588.

2⁴²³³⁸⁸ is an apocalyptic number.

It is an amenable number.

423388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

423388 is a wasteful number, since it uses less digits than its factorization.

423388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15132 (or 15130 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 423388 is about 650.6827183812. The cubic root of 423388 is about 75.0895522885.

The spelling of 423388 in words is "four hundred twenty-three thousand, three hundred eighty-eight".