220878 has 24 divisors (see below), whose sum is σ = 547248. Its totient is φ = 63072.

The previous prime is 220877. The next prime is 220879. The reversal of 220878 is 878022.

It is an interprime number because it is at equal distance from previous prime (220877) and next prime (220879).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 751 + ... + 1002.

It is an arithmetic number, because the mean of its divisors is an integer number (22802).

2²²⁰⁸⁷⁸ is an apocalyptic number.

220878 is an abundant number, since it is smaller than the sum of its proper divisors (326370).

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

220878 is a wasteful number, since it uses less digits than its factorization.

220878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768 (or 1765 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 220878 is about 469.9765951619. The cubic root of 220878 is about 60.4483086466.

The spelling of 220878 in words is "two hundred twenty thousand, eight hundred seventy-eight".