4278445 has 8 divisors (see below), whose sum is σ = 5154840. Its totient is φ = 3408960.

The previous prime is 4278433. The next prime is 4278451. The reversal of 4278445 is 5448724.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 161604 + 4116841 = 402^2 + 2029^2 .

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

It is not a de Polignac number, because 4278445 - 2⁵ = 4278413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4278445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246 + ... + 2935.

It is an arithmetic number, because the mean of its divisors is an integer number (644355).

Almost surely, 2^4278445 is an apocalyptic number.

It is an amenable number.

4278445 is a deficient number, since it is larger than the sum of its proper divisors (876395).

4278445 is a wasteful number, since it uses less digits than its factorization.

4278445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455.

The product of its digits is 35840, while the sum is 34.

The square root of 4278445 is about 2068.4402336060. The cubic root of 4278445 is about 162.3411623470.

It can be divided in two parts, 42 and 78445, that added together give a palindrome (78487).

The spelling of 4278445 in words is "four million, two hundred seventy-eight thousand, four hundred forty-five".