2278878 has 32 divisors (see below), whose sum is σ = 5391360. Its totient is φ = 628320.

The previous prime is 2278877. The next prime is 2278891. The reversal of 2278878 is 8788722.

2278878 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

2278878 is strictly pandigital in base 8.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278877) 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, 283 + ... + 2153.

It is an arithmetic number, because the mean of its divisors is an integer number (168480).

2^2278878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2278878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2695680).

2278878 is an abundant number, since it is smaller than the sum of its proper divisors (3112482).

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

2278878 is a wasteful number, since it uses less digits than its factorization.

2278878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912.

The product of its digits is 100352, while the sum is 42.

The square root of 2278878 is about 1509.5953100086. The cubic root of 2278878 is about 131.5952939747.

The spelling of 2278878 in words is "two million, two hundred seventy-eight thousand, eight hundred seventy-eight".