275223220 has 24 divisors (see below), whose sum is σ = 591411744. Its totient is φ = 107528736.

The previous prime is 275223191. The next prime is 275223233. The reversal of 275223220 is 22322572.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159154 + ... + 160873.

It is an arithmetic number, because the mean of its divisors is an integer number (24642156).

Almost surely, 2^275223220 is an apocalyptic number.

275223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275223220 is an abundant number, since it is smaller than the sum of its proper divisors (316188524).

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

275223220 is a wasteful number, since it uses less digits than its factorization.

275223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320079 (or 320077 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 275223220 is about 16589.8529227959. The cubic root of 275223220 is about 650.4716261572.

Adding to 275223220 its reverse (22322572), we get a palindrome (297545792).

The spelling of 275223220 in words is "two hundred seventy-five million, two hundred twenty-three thousand, two hundred twenty".