450996820 has 24 divisors (see below), whose sum is σ = 957738600. Its totient is φ = 178371072.

The previous prime is 450996809. The next prime is 450996827. The reversal of 450996820 is 28699054.

It can be written as a sum of positive squares in 4 ways, for example, as 6461764 + 444535056 = 2542^2 + 21084^2 .

It is a super-2 number, since 2×450996820² = 406796263300224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450996827) 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, 124905 + ... + 128464.

It is an arithmetic number, because the mean of its divisors is an integer number (39905775).

Almost surely, 2^450996820 is an apocalyptic number.

It is an amenable number.

450996820 is an abundant number, since it is smaller than the sum of its proper divisors (506741780).

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

450996820 is a wasteful number, since it uses less digits than its factorization.

450996820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253467 (or 253465 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 450996820 is about 21236.6857112874. The cubic root of 450996820 is about 766.8748466375.

The spelling of 450996820 in words is "four hundred fifty million, nine hundred ninety-six thousand, eight hundred twenty".