445216422 has 32 divisors (see below), whose sum is σ = 1018386432. Its totient is φ = 127111104.

The previous prime is 445216391. The next prime is 445216423. The reversal of 445216422 is 224612544.

It is a self number, because there is not a number n which added to its sum of digits gives 445216422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445216423) 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, 70603 + ... + 76649.

It is an arithmetic number, because the mean of its divisors is an integer number (31824576).

Almost surely, 2^445216422 is an apocalyptic number.

445216422 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

445216422 is an abundant number, since it is smaller than the sum of its proper divisors (573170010).

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

445216422 is a wasteful number, since it uses less digits than its factorization.

445216422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812.

The product of its digits is 15360, while the sum is 30.

The square root of 445216422 is about 21100.1521795460. The cubic root of 445216422 is about 763.5844196450.

Adding to 445216422 its reverse (224612544), we get a palindrome (669828966).

The spelling of 445216422 in words is "four hundred forty-five million, two hundred sixteen thousand, four hundred twenty-two".