268220 has 12 divisors (see below), whose sum is σ = 563304. Its totient is φ = 107280.

The previous prime is 268211. The next prime is 268237. The reversal of 268220 is 22862.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 13411 = 268220 / (2 + 6 + 8 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 268192 and 268201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6686 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (46942).

2²⁶⁸²²⁰ is an apocalyptic number.

268220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268220 is an abundant number, since it is smaller than the sum of its proper divisors (295084).

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

268220 is a wasteful number, since it uses less digits than its factorization.

268220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13420 (or 13418 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 268220 is about 517.8996041705. The cubic root of 268220 is about 64.4906943288.

The spelling of 268220 in words is "two hundred sixty-eight thousand, two hundred twenty".