673440480 has 144 divisors (see below), whose sum is σ = 2383368624. Its totient is φ = 179573760.

The previous prime is 673440473. The next prime is 673440491. The reversal of 673440480 is 84044376.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30220 + ... + 47540.

It is an arithmetic number, because the mean of its divisors is an integer number (16551171).

Almost surely, 2^673440480 is an apocalyptic number.

673440480 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 673440480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191684312).

673440480 is an abundant number, since it is smaller than the sum of its proper divisors (1709928144).

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

673440480 is a wasteful number, since it uses less digits than its factorization.

673440480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17351 (or 17331 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 673440480 is about 25950.7317815895. The cubic root of 673440480 is about 876.5292354616.

The spelling of 673440480 in words is "six hundred seventy-three million, four hundred forty thousand, four hundred eighty".