672011220 has 48 divisors (see below), whose sum is σ = 1882782720. Its totient is φ = 179093376.

The previous prime is 672011203. The next prime is 672011231. The reversal of 672011220 is 22110276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159501 + ... + 163659.

It is an arithmetic number, because the mean of its divisors is an integer number (39224640).

Almost surely, 2^672011220 is an apocalyptic number.

672011220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

672011220 is an abundant number, since it is smaller than the sum of its proper divisors (1210771500).

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

672011220 is a wasteful number, since it uses less digits than its factorization.

672011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 672011220 is about 25923.1792031764. The cubic root of 672011220 is about 875.9087027723.

Adding to 672011220 its reverse (22110276), we get a palindrome (694121496).

The spelling of 672011220 in words is "six hundred seventy-two million, eleven thousand, two hundred twenty".