454440020 has 36 divisors (see below), whose sum is σ = 972790140. Its totient is φ = 178324224.

The previous prime is 454440013. The next prime is 454440037. The reversal of 454440020 is 20044454.

It can be written as a sum of positive squares in 6 ways, for example, as 14531344 + 439908676 = 3812^2 + 20974^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52136 + ... + 60224.

Almost surely, 2^454440020 is an apocalyptic number.

It is an amenable number.

454440020 is an abundant number, since it is smaller than the sum of its proper divisors (518350120).

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

454440020 is a wasteful number, since it uses less digits than its factorization.

454440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8204 (or 8149 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 454440020 is about 21317.5988328892. The cubic root of 454440020 is about 768.8215063809.

Adding to 454440020 its reverse (20044454), we get a palindrome (474484474).

The spelling of 454440020 in words is "four hundred fifty-four million, four hundred forty thousand, twenty".