673433280 has 168 divisors, whose sum is σ = 2494647792. Its totient is φ = 165758976.

The previous prime is 673433239. The next prime is 673433303. The reversal of 673433280 is 82334376.

It is a super-2 number, since 2×673433280² = 907024765223116800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 28447 + ... + 46433.

It is an arithmetic number, because the mean of its divisors is an integer number (14849094).

Almost surely, 2^673433280 is an apocalyptic number.

673433280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673433280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247323896).

673433280 is an abundant number, since it is smaller than the sum of its proper divisors (1821214512).

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

673433280 is a wasteful number, since it uses less digits than its factorization.

673433280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18023 (or 18010 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 673433280 is about 25950.5930568070. The cubic root of 673433280 is about 876.5261116849.

The spelling of 673433280 in words is "six hundred seventy-three million, four hundred thirty-three thousand, two hundred eighty".