207220 has 24 divisors (see below), whose sum is σ = 469224. Its totient is φ = 76416.

The previous prime is 207199. The next prime is 207227. The reversal of 207220 is 22702.

207220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2916 + 204304 = 54^2 + 452^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 207220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207227) by changing a digit.

207220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139 + ... + 658.

It is an arithmetic number, because the mean of its divisors is an integer number (19551).

2²⁰⁷²²⁰ is an apocalyptic number.

207220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207220 is an abundant number, since it is smaller than the sum of its proper divisors (262004).

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

207220 is a wasteful number, since it uses less digits than its factorization.

207220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 207220 is about 455.2142352783. The cubic root of 207220 is about 59.1757661951.

Adding to 207220 its reverse (22702), we get a palindrome (229922).

It can be divided in two parts, 20 and 7220, that multiplied together give a square (144400 = 380²).

The spelling of 207220 in words is "two hundred seven thousand, two hundred twenty", and thus it is an iban number.