228615887 has 6 divisors (see below), whose sum is σ = 229484952. Its totient is φ = 227750072.

The previous prime is 228615857. The next prime is 228615901. The reversal of 228615887 is 788516822.

It is not a de Polignac number, because 228615887 - 2¹² = 228611791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228615857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84518 + ... + 87180.

It is an arithmetic number, because the mean of its divisors is an integer number (38247492).

Almost surely, 2^228615887 is an apocalyptic number.

228615887 is a deficient number, since it is larger than the sum of its proper divisors (869065).

228615887 is an frugal number, since it uses more digits than its factorization.

228615887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3249 (or 2956 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The square root of 228615887 is about 15120.0491732005. The cubic root of 228615887 is about 611.4610565308.

The spelling of 228615887 in words is "two hundred twenty-eight million, six hundred fifteen thousand, eight hundred eighty-seven".