220860 has 48 divisors (see below), whose sum is σ = 688800. Its totient is φ = 58752.

The previous prime is 220859. The next prime is 220861. The reversal of 220860 is 68022.

It is an interprime number because it is at equal distance from previous prime (220859) and next prime (220861).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (14350).

2²²⁰⁸⁶⁰ is an apocalyptic number.

220860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344400).

220860 is an abundant number, since it is smaller than the sum of its proper divisors (467940).

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

220860 is a wasteful number, since it uses less digits than its factorization.

220860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 220860 is about 469.9574448820. The cubic root of 220860 is about 60.4466665649.

Adding to 220860 its reverse (68022), we get a palindrome (288882).

The spelling of 220860 in words is "two hundred twenty thousand, eight hundred sixty".