445720224 has 48 divisors (see below), whose sum is σ = 1173856320. Its totient is φ = 148085760.

The previous prime is 445720213. The next prime is 445720267. The reversal of 445720224 is 422027544.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×445720224² = 397333036165220352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445720191 and 445720200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22392 + ... + 37320.

It is an arithmetic number, because the mean of its divisors is an integer number (24455340).

Almost surely, 2^445720224 is an apocalyptic number.

It is an amenable number.

445720224 is an abundant number, since it is smaller than the sum of its proper divisors (728136096).

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

445720224 is a wasteful number, since it uses less digits than its factorization.

445720224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15253 (or 15245 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 445720224 is about 21112.0871540452. The cubic root of 445720224 is about 763.8723323126.

Adding to 445720224 its reverse (422027544), we get a palindrome (867747768).

The spelling of 445720224 in words is "four hundred forty-five million, seven hundred twenty thousand, two hundred twenty-four".