228351538 has 16 divisors (see below), whose sum is σ = 360864000. Its totient is φ = 108073872.

The previous prime is 228351493. The next prime is 228351547. The reversal of 228351538 is 835153822.

It is a junction number, because it is equal to n+sod(n) for n = 228351497 and 228351506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66303 + ... + 69661.

It is an arithmetic number, because the mean of its divisors is an integer number (22554000).

Almost surely, 2^228351538 is an apocalyptic number.

228351538 is a deficient number, since it is larger than the sum of its proper divisors (132512462).

228351538 is a wasteful number, since it uses less digits than its factorization.

228351538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169.

The product of its digits is 57600, while the sum is 37.

The square root of 228351538 is about 15111.3049734297. The cubic root of 228351538 is about 611.2252877599.

The spelling of 228351538 in words is "two hundred twenty-eight million, three hundred fifty-one thousand, five hundred thirty-eight".