228128774 has 16 divisors (see below), whose sum is σ = 347104320. Its totient is φ = 112432320.

The previous prime is 228128773. The next prime is 228128827. The reversal of 228128774 is 477821822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228128773) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 172034 + ... + 173354.

It is an arithmetic number, because the mean of its divisors is an integer number (21694020).

Almost surely, 2^228128774 is an apocalyptic number.

228128774 is a deficient number, since it is larger than the sum of its proper divisors (118975546).

228128774 is a wasteful number, since it uses less digits than its factorization.

228128774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495.

The product of its digits is 100352, while the sum is 41.

The square root of 228128774 is about 15103.9324018614. The cubic root of 228128774 is about 611.0264666922.

The spelling of 228128774 in words is "two hundred twenty-eight million, one hundred twenty-eight thousand, seven hundred seventy-four".