4278385 has 8 divisors (see below), whose sum is σ = 5221440. Its totient is φ = 3364464.

The previous prime is 4278383. The next prime is 4278413. The reversal of 4278385 is 5838724.

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 4278385 - 2¹ = 4278383 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 2²² + 7⁵ + 8 + 3¹⁰ + 8⁴ + 5² .

It is not an unprimeable number, because it can be changed into a prime (4278383) 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, 6957 + ... + 7546.

It is an arithmetic number, because the mean of its divisors is an integer number (652680).

Almost surely, 2^4278385 is an apocalyptic number.

It is an amenable number.

4278385 is a deficient number, since it is larger than the sum of its proper divisors (943055).

4278385 is a wasteful number, since it uses less digits than its factorization.

4278385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14567.

The product of its digits is 53760, while the sum is 37.

The square root of 4278385 is about 2068.4257298728. The cubic root of 4278385 is about 162.3404034642.

The spelling of 4278385 in words is "four million, two hundred seventy-eight thousand, three hundred eighty-five".