228790028 has 6 divisors (see below), whose sum is σ = 400382556. Its totient is φ = 114395012.

The previous prime is 228789997. The next prime is 228790049. The reversal of 228790028 is 820097822.

It is a junction number, because it is equal to n+sod(n) for n = 228789973 and 228790000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28598750 + ... + 28598757.

It is an arithmetic number, because the mean of its divisors is an integer number (66730426).

Almost surely, 2^228790028 is an apocalyptic number.

It is an amenable number.

228790028 is a deficient number, since it is larger than the sum of its proper divisors (171592528).

228790028 is a wasteful number, since it uses less digits than its factorization.

228790028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57197511 (or 57197509 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 228790028 is about 15125.8066892315. The cubic root of 228790028 is about 611.6162709047.

The spelling of 228790028 in words is "two hundred twenty-eight million, seven hundred ninety thousand, twenty-eight".