4278 has 16 divisors (see below), whose sum is σ = 9216.
Its totient is φ = 1320.
The previous prime is 4273. The next prime is 4283. The reversal of 4278 is 8724.
It is a happy number.
4278 is a nontrivial binomial coefficient, being equal to C(93, 2).
It is an interprime number because it is at equal distance from previous prime (4273) and next prime (4283).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (4271) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123 + ... + 153.
It is an arithmetic number, because the mean of its divisors is an integer number (576).
24278 is an apocalyptic number.
4278 is the 92-nd triangular number.
4278 is an abundant number, since it is smaller than the sum of its proper divisors (4938).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4608).
4278 is a wasteful number, since it uses less digits than its factorization.
4278 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 59.
The product of its digits is 448, while the sum is 21.
The square root of 4278 is about 65.4064217031.
The cubic root of 4278 is about 16.2335533797.
It can be divided in two parts, 427 and 8, that added together give a triangular number (435 = T29).
The spelling of 4278 in words is "four thousand, two hundred seventy-eight".