423720000 has 420 divisors, whose sum is σ = 1671102576. Its totient is φ = 101760000.

The previous prime is 423719999. The next prime is 423720071. The reversal of 423720000 is 27324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3959947 + ... + 3960053.

Almost surely, 2^423720000 is an apocalyptic number.

423720000 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 423720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835551288).

423720000 is an abundant number, since it is smaller than the sum of its proper divisors (1247382576).

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

423720000 is a wasteful number, since it uses less digits than its factorization.

423720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 423720000 is about 20584.4601580901. The cubic root of 423720000 is about 751.0917433575.

Adding to 423720000 its reverse (27324), we get a palindrome (423747324).

The spelling of 423720000 in words is "four hundred twenty-three million, seven hundred twenty thousand".