4278816 has 72 divisors (see below), whose sum is σ = 12383280. Its totient is φ = 1401216.

The previous prime is 4278773. The next prime is 4278829. The reversal of 4278816 is 6188724.

4278816 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23815 + ... + 23993.

It is an arithmetic number, because the mean of its divisors is an integer number (171990).

Almost surely, 2^4278816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4278816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6191640).

4278816 is an abundant number, since it is smaller than the sum of its proper divisors (8104464).

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

4278816 is a wasteful number, since it uses less digits than its factorization.

4278816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 267 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 4278816 is about 2068.5299127641. The cubic root of 4278816 is about 162.3458546149.

The spelling of 4278816 in words is "four million, two hundred seventy-eight thousand, eight hundred sixteen".