228141638 has 8 divisors (see below), whose sum is σ = 343004088. Its totient is φ = 113806944.

The previous prime is 228141559. The next prime is 228141643. The reversal of 228141638 is 836141822.

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 = 228141598 and 228141607.

It is a congruent number.

It is an unprimeable number.

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, 130856 + ... + 132587.

It is an arithmetic number, because the mean of its divisors is an integer number (42875511).

Almost surely, 2^228141638 is an apocalyptic number.

228141638 is a deficient number, since it is larger than the sum of its proper divisors (114862450).

228141638 is a wasteful number, since it uses less digits than its factorization.

228141638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263878.

The product of its digits is 18432, while the sum is 35.

The square root of 228141638 is about 15104.3582452218. The cubic root of 228141638 is about 611.0379515750.

The spelling of 228141638 in words is "two hundred twenty-eight million, one hundred forty-one thousand, six hundred thirty-eight".