446442820 has 24 divisors (see below), whose sum is σ = 969859800. Its totient is φ = 172419072.

The previous prime is 446442803. The next prime is 446442823. The reversal of 446442820 is 28244644.

It can be written as a sum of positive squares in 4 ways, for example, as 90592324 + 355850496 = 9518^2 + 18864^2 .

It is a super-2 number, since 2×446442820² = 398622383059104800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (446442823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384285 + ... + 385444.

It is an arithmetic number, because the mean of its divisors is an integer number (40410825).

Almost surely, 2^446442820 is an apocalyptic number.

It is an amenable number.

446442820 is an abundant number, since it is smaller than the sum of its proper divisors (523416980).

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

446442820 is a wasteful number, since it uses less digits than its factorization.

446442820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769767 (or 769765 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

The square root of 446442820 is about 21129.1935482640. The cubic root of 446442820 is about 764.2849028353.

The spelling of 446442820 in words is "four hundred forty-six million, four hundred forty-two thousand, eight hundred twenty".