228538775 has 12 divisors (see below), whose sum is σ = 283575600. Its totient is φ = 182710080.

The previous prime is 228538759. The next prime is 228538819. The reversal of 228538775 is 577835822.

It is a happy number.

It is not a de Polignac number, because 228538775 - 2⁴ = 228538759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72686 + ... + 75764.

It is an arithmetic number, because the mean of its divisors is an integer number (23631300).

Almost surely, 2^228538775 is an apocalyptic number.

228538775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228538775 is a deficient number, since it is larger than the sum of its proper divisors (55036825).

228538775 is a wasteful number, since it uses less digits than its factorization.

228538775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058 (or 6053 counting only the distinct ones).

The product of its digits is 940800, while the sum is 47.

The square root of 228538775 is about 15117.4989664296. The cubic root of 228538775 is about 611.3923003186.

The spelling of 228538775 in words is "two hundred twenty-eight million, five hundred thirty-eight thousand, seven hundred seventy-five".