228137138 has 8 divisors (see below), whose sum is σ = 357084288. Its totient is φ = 109109044.

The previous prime is 228137137. The next prime is 228137149. The reversal of 228137138 is 831731822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 228137098 and 228137107.

It is not an unprimeable number, because it can be changed into a prime (228137131) 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 3 ways as a sum of consecutive naturals, for example, 2479706 + ... + 2479797.

It is an arithmetic number, because the mean of its divisors is an integer number (44635536).

Almost surely, 2^228137138 is an apocalyptic number.

228137138 is a deficient number, since it is larger than the sum of its proper divisors (128947150).

228137138 is a wasteful number, since it uses less digits than its factorization.

228137138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959528.

The product of its digits is 16128, while the sum is 35.

The square root of 228137138 is about 15104.2092808594. The cubic root of 228137138 is about 611.0339340578.

The spelling of 228137138 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, one hundred thirty-eight".