264220 has 24 divisors (see below), whose sum is σ = 605808. Its totient is φ = 96000.

The previous prime is 264211. The next prime is 264221. The reversal of 264220 is 22462.

It is a junction number, because it is equal to n+sod(n) for n = 264194 and 264203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381 + ... + 820.

It is an arithmetic number, because the mean of its divisors is an integer number (25242).

2²⁶⁴²²⁰ is an apocalyptic number.

264220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264220 is an abundant number, since it is smaller than the sum of its proper divisors (341588).

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

264220 is a wasteful number, since it uses less digits than its factorization.

264220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 264220 is about 514.0233457733. The cubic root of 264220 is about 64.1685012875.

Adding to 264220 its reverse (22462), we get a palindrome (286682).

It can be divided in two parts, 2642 and 20, that added together give a palindrome (2662).

The spelling of 264220 in words is "two hundred sixty-four thousand, two hundred twenty".