423115400 has 48 divisors (see below), whose sum is σ = 989854800. Its totient is φ = 168194880.

The previous prime is 423115391. The next prime is 423115403. The reversal of 423115400 is 4511324.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (423115403) 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, 26111 + ... + 39089.

It is an arithmetic number, because the mean of its divisors is an integer number (20621975).

Almost surely, 2^423115400 is an apocalyptic number.

423115400 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 423115400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494927400).

423115400 is an abundant number, since it is smaller than the sum of its proper divisors (566739400).

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

423115400 is a wasteful number, since it uses less digits than its factorization.

423115400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13158 (or 13149 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 423115400 is about 20569.7690798900. The cubic root of 423115400 is about 750.7343326247.

Adding to 423115400 its reverse (4511324), we get a palindrome (427626724).

The spelling of 423115400 in words is "four hundred twenty-three million, one hundred fifteen thousand, four hundred".