273966220 has 144 divisors (see below), whose sum is σ = 693181440. Its totient is φ = 90086400.

The previous prime is 273966197. The next prime is 273966227. The reversal of 273966220 is 22669372.

It is a self number, because there is not a number n which added to its sum of digits gives 273966220.

It is not an unprimeable number, because it can be changed into a prime (273966227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1970911 + ... + 1971049.

It is an arithmetic number, because the mean of its divisors is an integer number (4813760).

Almost surely, 2^273966220 is an apocalyptic number.

273966220 is a gapful number since it is divisible by the number (20) 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 273966220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346590720).

273966220 is an abundant number, since it is smaller than the sum of its proper divisors (419215220).

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

273966220 is a wasteful number, since it uses less digits than its factorization.

273966220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 273966220 is about 16551.9249635805. The cubic root of 273966220 is about 649.4798363146.

The spelling of 273966220 in words is "two hundred seventy-three million, nine hundred sixty-six thousand, two hundred twenty".