452201220 has 36 divisors (see below), whose sum is σ = 1371677580. Its totient is φ = 120586944.

The previous prime is 452201213. The next prime is 452201221. The reversal of 452201220 is 22102254.

It can be written as a sum of positive squares in 2 ways, for example, as 361304064 + 90897156 = 19008^2 + 9534^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 452201193 and 452201202.

It is not an unprimeable number, because it can be changed into a prime (452201221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1255935 + ... + 1256294.

It is an arithmetic number, because the mean of its divisors is an integer number (38102155).

Almost surely, 2^452201220 is an apocalyptic number.

It is an amenable number.

452201220 is an abundant number, since it is smaller than the sum of its proper divisors (919476360).

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

452201220 is a wasteful number, since it uses less digits than its factorization.

452201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512244 (or 2512239 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 452201220 is about 21265.0233952375. The cubic root of 452201220 is about 767.5568936452.

Adding to 452201220 its reverse (22102254), we get a palindrome (474303474).

The spelling of 452201220 in words is "four hundred fifty-two million, two hundred one thousand, two hundred twenty".