673000020 has 288 divisors, whose sum is σ = 2591447040. Its totient is φ = 137306880.

The previous prime is 672999997. The next prime is 673000037. The reversal of 673000020 is 20000376.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 672999957 and 673000002.

It is a congruent 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, 817329 + ... + 818151.

It is an arithmetic number, because the mean of its divisors is an integer number (8998080).

Almost surely, 2^673000020 is an apocalyptic number.

673000020 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 673000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1295723520).

673000020 is an abundant number, since it is smaller than the sum of its proper divisors (1918447020).

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

673000020 is a wasteful number, since it uses less digits than its factorization.

673000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 673000020 is about 25942.2439276174. The cubic root of 673000020 is about 876.3380974277.

Adding to 673000020 its reverse (20000376), we get a palindrome (693000396).

The spelling of 673000020 in words is "six hundred seventy-three million, twenty", and thus it is an aban number.