228536258 has 4 divisors (see below), whose sum is σ = 342804390. Its totient is φ = 114268128.

The previous prime is 228536251. The next prime is 228536261. The reversal of 228536258 is 852635822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 852635822 = 2 ⋅426317911.

It can be written as a sum of positive squares in only one way, i.e., 146579449 + 81956809 = 12107^2 + 9053^2 .

It is not an unprimeable number, because it can be changed into a prime (228536251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57134063 + ... + 57134066.

Almost surely, 2^228536258 is an apocalyptic number.

228536258 is a deficient number, since it is larger than the sum of its proper divisors (114268132).

228536258 is a wasteful number, since it uses less digits than its factorization.

228536258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114268131.

The product of its digits is 230400, while the sum is 41.

The square root of 228536258 is about 15117.4157183032. The cubic root of 228536258 is about 611.3900557979.

The spelling of 228536258 in words is "two hundred twenty-eight million, five hundred thirty-six thousand, two hundred fifty-eight".