450536840 has 32 divisors (see below), whose sum is σ = 1091686680. Its totient is φ = 166351872.

The previous prime is 450536791. The next prime is 450536881. The reversal of 450536840 is 48635054.

It can be written as a sum of positive squares in 4 ways, for example, as 182952676 + 267584164 = 13526^2 + 16358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 450536840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432689 + ... + 433728.

Almost surely, 2^450536840 is an apocalyptic number.

450536840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450536840 is an abundant number, since it is smaller than the sum of its proper divisors (641149840).

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

450536840 is a wasteful number, since it uses less digits than its factorization.

450536840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866441 (or 866437 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 450536840 is about 21225.8531041746. The cubic root of 450536840 is about 766.6140413363.

The spelling of 450536840 in words is "four hundred fifty million, five hundred thirty-six thousand, eight hundred forty".