22878 has 24 divisors (see below), whose sum is σ = 52416. Its totient is φ = 7200.

The previous prime is 22877. The next prime is 22901. The reversal of 22878 is 87822.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22871) 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, 538 + ... + 578.

It is an arithmetic number, because the mean of its divisors is an integer number (2184).

2²²⁸⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26208).

22878 is an abundant number, since it is smaller than the sum of its proper divisors (29538).

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

22878 is a wasteful number, since it uses less digits than its factorization.

22878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 77 counting only the distinct ones).

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

The square root of 22878 is about 151.2547519915. The cubic root of 22878 is about 28.3882977642.

It can be divided in two parts, 22 and 878, that added together give a square (900 = 30²).

The spelling of 22878 in words is "twenty-two thousand, eight hundred seventy-eight".