275343220 has 24 divisors (see below), whose sum is σ = 612234504. Its totient is φ = 103658496.

The previous prime is 275343217. The next prime is 275343227. The reversal of 275343220 is 22343572.

It can be written as a sum of positive squares in 4 ways, for example, as 4477456 + 270865764 = 2116^2 + 16458^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275343227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404577 + ... + 405256.

It is an arithmetic number, because the mean of its divisors is an integer number (25509771).

Almost surely, 2^275343220 is an apocalyptic number.

275343220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275343220 is an abundant number, since it is smaller than the sum of its proper divisors (336891284).

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

275343220 is a wasteful number, since it uses less digits than its factorization.

275343220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809859 (or 809857 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 275343220 is about 16593.4691972475. The cubic root of 275343220 is about 650.5661497387.

Adding to 275343220 its reverse (22343572), we get a palindrome (297686792).

The spelling of 275343220 in words is "two hundred seventy-five million, three hundred forty-three thousand, two hundred twenty".