450020020 has 24 divisors (see below), whose sum is σ = 945469224. Its totient is φ = 179926656.

The previous prime is 450019949. The next prime is 450020029. The reversal of 450020020 is 20020054.

It is a happy number.

450020020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 210946576 + 239073444 = 14524^2 + 15462^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450020029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61602 + ... + 68518.

It is an arithmetic number, because the mean of its divisors is an integer number (39394551).

Almost surely, 2^450020020 is an apocalyptic number.

It is an amenable number.

450020020 is an abundant number, since it is smaller than the sum of its proper divisors (495449204).

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

450020020 is a wasteful number, since it uses less digits than its factorization.

450020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10179 (or 10177 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 450020020 is about 21213.6753062735. The cubic root of 450020020 is about 766.3207963101.

Adding to 450020020 its reverse (20020054), we get a palindrome (470040074).

The spelling of 450020020 in words is "four hundred fifty million, twenty thousand, twenty".