447413220 has 60 divisors (see below), whose sum is σ = 1403556924. Its totient is φ = 119309760.

The previous prime is 447413209. The next prime is 447413221. The reversal of 447413220 is 22314744.

It can be written as a sum of positive squares in 2 ways, for example, as 77158656 + 370254564 = 8784^2 + 19242^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (447413221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136471 + ... + 139710.

Almost surely, 2^447413220 is an apocalyptic number.

It is an amenable number.

447413220 is an abundant number, since it is smaller than the sum of its proper divisors (956143704).

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

447413220 is a wasteful number, since it uses less digits than its factorization.

447413220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276202 (or 276191 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 447413220 is about 21152.1445721232. The cubic root of 447413220 is about 764.8382587703.

Adding to 447413220 its reverse (22314744), we get a palindrome (469727964).

It can be divided in two parts, 44741 and 3220, that added together give a square (47961 = 219²).

The spelling of 447413220 in words is "four hundred forty-seven million, four hundred thirteen thousand, two hundred twenty".