673378450 has 36 divisors (see below), whose sum is σ = 1269821070. Its totient is φ = 265640320.

The previous prime is 673378441. The next prime is 673378457. The reversal of 673378450 is 54873376.

It can be written as a sum of positive squares in 9 ways, for example, as 24810361 + 648568089 = 4981^2 + 25467^2 .

It is a junction number, because it is equal to n+sod(n) for n = 673378397 and 673378406.

It is not an unprimeable number, because it can be changed into a prime (673378457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1730856 + ... + 1731244.

Almost surely, 2^673378450 is an apocalyptic number.

673378450 is a deficient number, since it is larger than the sum of its proper divisors (596442620).

673378450 is an equidigital number, since it uses as much as digits as its factorization.

673378450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 673378450 is about 25949.5366047257. The cubic root of 673378450 is about 876.5023225274.

The spelling of 673378450 in words is "six hundred seventy-three million, three hundred seventy-eight thousand, four hundred fifty".