673320450 has 192 divisors, whose sum is σ = 1923626880. Its totient is φ = 154368000.

The previous prime is 673320443. The next prime is 673320467. The reversal of 673320450 is 54023376.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2502916 + ... + 2503184.

It is an arithmetic number, because the mean of its divisors is an integer number (10018890).

Almost surely, 2^673320450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673320450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961813440).

673320450 is an abundant number, since it is smaller than the sum of its proper divisors (1250306430).

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

673320450 is a wasteful number, since it uses less digits than its factorization.

673320450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 673320450 is about 25948.4190269851. The cubic root of 673320450 is about 876.4771565927.

It can be divided in two parts, 673 and 320450, that added together give a palindrome (321123).

The spelling of 673320450 in words is "six hundred seventy-three million, three hundred twenty thousand, four hundred fifty".