4278628 has 12 divisors (see below), whose sum is σ = 7928172. Its totient is φ = 2013440.

The previous prime is 4278619. The next prime is 4278641. The reversal of 4278628 is 8268724.

It can be written as a sum of positive squares in 2 ways, for example, as 2951524 + 1327104 = 1718^2 + 1152^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31393 + ... + 31528.

It is an arithmetic number, because the mean of its divisors is an integer number (660681).

Almost surely, 2^4278628 is an apocalyptic number.

It is an amenable number.

4278628 is a deficient number, since it is larger than the sum of its proper divisors (3649544).

4278628 is a wasteful number, since it uses less digits than its factorization.

4278628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62942 (or 62940 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 4278628 is about 2068.4844693640. The cubic root of 4278628 is about 162.3434768958.

The spelling of 4278628 in words is "four million, two hundred seventy-eight thousand, six hundred twenty-eight".