450090280 has 16 divisors (see below), whose sum is σ = 1012703220. Its totient is φ = 180036096.

The previous prime is 450090233. The next prime is 450090287. The reversal of 450090280 is 82090054.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 431891524 + 18198756 = 20782^2 + 4266^2 .

It is not an unprimeable number, because it can be changed into a prime (450090287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5626089 + ... + 5626168.

Almost surely, 2^450090280 is an apocalyptic number.

450090280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450090280 is an abundant number, since it is smaller than the sum of its proper divisors (562612940).

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

450090280 is a wasteful number, since it uses less digits than its factorization.

450090280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11252268 (or 11252264 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 450090280 is about 21215.3312488870. The cubic root of 450090280 is about 766.3606752006.

The spelling of 450090280 in words is "four hundred fifty million, ninety thousand, two hundred eighty".