228178628 has 6 divisors (see below), whose sum is σ = 399312606. Its totient is φ = 114089312.

The previous prime is 228178609. The next prime is 228178633. The reversal of 228178628 is 826871822.

It can be written as a sum of positive squares in only one way, i.e., 200279104 + 27899524 = 14152^2 + 5282^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28522325 + ... + 28522332.

It is an arithmetic number, because the mean of its divisors is an integer number (66552101).

Almost surely, 2^228178628 is an apocalyptic number.

It is an amenable number.

228178628 is a deficient number, since it is larger than the sum of its proper divisors (171133978).

228178628 is a wasteful number, since it uses less digits than its factorization.

228178628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57044661 (or 57044659 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 228178628 is about 15105.5826766133. The cubic root of 228178628 is about 611.0709735646.

The spelling of 228178628 in words is "two hundred twenty-eight million, one hundred seventy-eight thousand, six hundred twenty-eight".