4278885 has 16 divisors (see below), whose sum is σ = 7373184. Its totient is φ = 2106432.

The previous prime is 4278881. The next prime is 4278893. The reversal of 4278885 is 5888724.

4278885 = 113² + 114² + ... + 242².

It is not a de Polignac number, because 4278885 - 2² = 4278881 is a prime.

4278885 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10777 + ... + 11166.

It is an arithmetic number, because the mean of its divisors is an integer number (460824).

Almost surely, 2^4278885 is an apocalyptic number.

It is an amenable number.

4278885 is a deficient number, since it is larger than the sum of its proper divisors (3094299).

4278885 is a wasteful number, since it uses less digits than its factorization.

4278885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21964.

The product of its digits is 143360, while the sum is 42.

The square root of 4278885 is about 2068.5465912084. The cubic root of 4278885 is about 162.3467272709.

The spelling of 4278885 in words is "four million, two hundred seventy-eight thousand, eight hundred eighty-five".