672043220 has 24 divisors (see below), whose sum is σ = 1414140000. Its totient is φ = 268274592.

The previous prime is 672043189. The next prime is 672043249. The reversal of 672043220 is 22340276.

It is a self number, because there is not a number n which added to its sum of digits gives 672043220.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23690 + ... + 43649.

It is an arithmetic number, because the mean of its divisors is an integer number (58922500).

Almost surely, 2^672043220 is an apocalyptic number.

It is an amenable number.

672043220 is an abundant number, since it is smaller than the sum of its proper divisors (742096780).

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

672043220 is a wasteful number, since it uses less digits than its factorization.

672043220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67847 (or 67845 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 672043220 is about 25923.7964040763. The cubic root of 672043220 is about 875.9226056323.

Adding to 672043220 its reverse (22340276), we get a palindrome (694383496).

The spelling of 672043220 in words is "six hundred seventy-two million, forty-three thousand, two hundred twenty".