It is a happy number.
The square root of 406425600 is 20160.
It is a Jordan-Polya number, since it can be written as 8! ⋅ 7! ⋅ 2!.
406425600 is a `hidden beast` number, since 40 + 64 + 2 + 560 + 0 = 666.
Almost surely, 2406425600 is an apocalyptic number.
406425600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
406425600 is the 20160-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 406425600
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
406425600 is an equidigital number, since it uses as much as digits as its factorization.
406425600 is an evil number, because the sum of its binary digits is even.
The cubic root of 406425600 is about 740.7307123581.
The spelling of 406425600 in words is "four hundred six million, four hundred twenty-five thousand, six hundred".