4278215 has 8 divisors (see below), whose sum is σ = 5151120. Its totient is φ = 3411072.

The previous prime is 4278193. The next prime is 4278223. The reversal of 4278215 is 5128724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4278215 - 2¹⁶ = 4212679 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 2954.

It is an arithmetic number, because the mean of its divisors is an integer number (643890).

Almost surely, 2^4278215 is an apocalyptic number.

4278215 is a deficient number, since it is larger than the sum of its proper divisors (872905).

4278215 is a wasteful number, since it uses less digits than its factorization.

4278215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881.

The product of its digits is 4480, while the sum is 29.

The square root of 4278215 is about 2068.3846354100. The cubic root of 4278215 is about 162.3382532576.

The spelling of 4278215 in words is "four million, two hundred seventy-eight thousand, two hundred fifteen".