446421040 has 80 divisors (see below), whose sum is σ = 1141676928. Its totient is φ = 161307648.

The previous prime is 446421023. The next prime is 446421043. The reversal of 446421040 is 40124644.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 446420996 and 446421014.

It is not an unprimeable number, because it can be changed into a prime (446421043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44314 + ... + 53446.

Almost surely, 2^446421040 is an apocalyptic number.

446421040 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 446421040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570838464).

446421040 is an abundant number, since it is smaller than the sum of its proper divisors (695255888).

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

446421040 is a wasteful number, since it uses less digits than its factorization.

446421040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206 (or 9200 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 446421040 is about 21128.6781413320. The cubic root of 446421040 is about 764.2724739231.

Adding to 446421040 its reverse (40124644), we get a palindrome (486545684).

The spelling of 446421040 in words is "four hundred forty-six million, four hundred twenty-one thousand, forty".