4278285 has 64 divisors (see below), whose sum is σ = 8616960. Its totient is φ = 1995840.

The previous prime is 4278257. The next prime is 4278289. The reversal of 4278285 is 5828724.

It is a happy number.

It is not a de Polignac number, because 4278285 - 2¹² = 4274189 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63822 + ... + 63888.

It is an arithmetic number, because the mean of its divisors is an integer number (134640).

Almost surely, 2^4278285 is an apocalyptic number.

4278285 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4278285 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

4278285 is a wasteful number, since it uses less digits than its factorization.

4278285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 129 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 4278285 is about 2068.4015567583. The cubic root of 4278285 is about 162.3391386437.

The spelling of 4278285 in words is "four million, two hundred seventy-eight thousand, two hundred eighty-five".