228289136 has 10 divisors (see below), whose sum is σ = 442310232. Its totient is φ = 114144560.

The previous prime is 228289081. The next prime is 228289151. The reversal of 228289136 is 631982822.

It is a junction number, because it is equal to n+sod(n) for n = 228289093 and 228289102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7134020 + ... + 7134051.

Almost surely, 2^228289136 is an apocalyptic number.

It is an amenable number.

228289136 is a deficient number, since it is larger than the sum of its proper divisors (214021096).

228289136 is a wasteful number, since it uses less digits than its factorization.

228289136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268079 (or 14268073 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 228289136 is about 15109.2400867813. The cubic root of 228289136 is about 611.1696058413.

The spelling of 228289136 in words is "two hundred twenty-eight million, two hundred eighty-nine thousand, one hundred thirty-six".