4278340 has 24 divisors (see below), whose sum is σ = 9801792. Its totient is φ = 1555680.

The previous prime is 4278289. The next prime is 4278343. The reversal of 4278340 is 438724.

It is a junction number, because it is equal to n+sod(n) for n = 4278299 and 4278308.

It is not an unprimeable number, because it can be changed into a prime (4278343) 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, 9504 + ... + 9943.

It is an arithmetic number, because the mean of its divisors is an integer number (408408).

Almost surely, 2^4278340 is an apocalyptic number.

It is an amenable number.

4278340 is an abundant number, since it is smaller than the sum of its proper divisors (5523452).

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

4278340 is a wasteful number, since it uses less digits than its factorization.

4278340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19467 (or 19465 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 4278340 is about 2068.4148520062. The cubic root of 4278340 is about 162.3398342974.

The spelling of 4278340 in words is "four million, two hundred seventy-eight thousand, three hundred forty".