228605278 has 16 divisors (see below), whose sum is σ = 375580800. Its totient is φ = 103495000.

The previous prime is 228605263. The next prime is 228605327. The reversal of 228605278 is 872506822.

It is a self number, because there is not a number n which added to its sum of digits gives 228605278.

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, 15178 + ... + 26221.

It is an arithmetic number, because the mean of its divisors is an integer number (23473800).

Almost surely, 2^228605278 is an apocalyptic number.

228605278 is a deficient number, since it is larger than the sum of its proper divisors (146975522).

228605278 is a wasteful number, since it uses less digits than its factorization.

228605278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41663.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 228605278 is about 15119.6983435517. The cubic root of 228605278 is about 611.4515980300.

It can be divided in two parts, 228 and 605278, that added together give a palindrome (605506).

The spelling of 228605278 in words is "two hundred twenty-eight million, six hundred five thousand, two hundred seventy-eight".