450478420 has 48 divisors (see below), whose sum is σ = 1083858048. Its totient is φ = 154062720.

The previous prime is 450478403. The next prime is 450478421. The reversal of 450478420 is 24874054.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450478421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55119 + ... + 62761.

It is an arithmetic number, because the mean of its divisors is an integer number (22580376).

Almost surely, 2^450478420 is an apocalyptic number.

It is an amenable number.

450478420 is an abundant number, since it is smaller than the sum of its proper divisors (633379628).

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

450478420 is a wasteful number, since it uses less digits than its factorization.

450478420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080 (or 8078 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 450478420 is about 21224.4769075707. The cubic root of 450478420 is about 766.5809049205.

The spelling of 450478420 in words is "four hundred fifty million, four hundred seventy-eight thousand, four hundred twenty".