228561004 has 12 divisors (see below), whose sum is σ = 457122064. Its totient is φ = 97954704.

The previous prime is 228560993. The next prime is 228561031. The reversal of 228561004 is 400165822.

228561004 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 8162893 = 228561004 / (2 + 2 + 8 + 5 + 6 + 1 + 0 + 0 + 4).

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, 4081419 + ... + 4081474.

Almost surely, 2^228561004 is an apocalyptic number.

It is an amenable number.

228561004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228561004 is a wasteful number, since it uses less digits than its factorization.

228561004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8162904 (or 8162902 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 228561004 is about 15118.2341561440. The cubic root of 228561004 is about 611.4121221903.

The spelling of 228561004 in words is "two hundred twenty-eight million, five hundred sixty-one thousand, four".