264271220 has 24 divisors (see below), whose sum is σ = 560361984. Its totient is φ = 104681376.

The previous prime is 264271213. The next prime is 264271223. The reversal of 264271220 is 22172462.

It is a super-3 number, since 3×264271220³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 264271220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264271223) 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, 62084 + ... + 66203.

It is an arithmetic number, because the mean of its divisors is an integer number (23348416).

Almost surely, 2^264271220 is an apocalyptic number.

264271220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264271220 is an abundant number, since it is smaller than the sum of its proper divisors (296090764).

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

264271220 is a wasteful number, since it uses less digits than its factorization.

264271220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128399 (or 128397 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 264271220 is about 16256.4208852994. The cubic root of 264271220 is about 641.7264745138.

The spelling of 264271220 in words is "two hundred sixty-four million, two hundred seventy-one thousand, two hundred twenty".