423800 has 48 divisors (see below), whose sum is σ = 1067640. Its totient is φ = 155520.

The previous prime is 423791. The next prime is 423803. The reversal of 423800 is 8324.

423800 = 118² + 119² + ... + 142².

423800 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 651²-1.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423800.

It is not an unprimeable number, because it can be changed into a prime (423803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2519 + ... + 2681.

2⁴²³⁸⁰⁰ is an apocalyptic number.

423800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533820).

423800 is an abundant number, since it is smaller than the sum of its proper divisors (643840).

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

423800 is a wasteful number, since it uses less digits than its factorization.

423800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 423800 is about 650.9992319504. Note that the first 3 decimals coincide. The cubic root of 423800 is about 75.1139010073.

The spelling of 423800 in words is "four hundred twenty-three thousand, eight hundred".