228347487 has 6 divisors (see below), whose sum is σ = 329835272. Its totient is φ = 152231652.

The previous prime is 228347477. The next prime is 228347489. The reversal of 228347487 is 784743822.

228347487 is a `hidden beast` number, since 22 + 83 + 474 + 87 = 666.

It is not a de Polignac number, because 228347487 - 2¹⁹ = 227823199 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 (228347489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12685963 + ... + 12685980.

Almost surely, 2^228347487 is an apocalyptic number.

228347487 is a deficient number, since it is larger than the sum of its proper divisors (101487785).

228347487 is a wasteful number, since it uses less digits than its factorization.

228347487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25371949 (or 25371946 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 228347487 is about 15111.1709341136. The cubic root of 228347487 is about 611.2216733206.

It can be divided in two parts, 2283 and 47487, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 228347487 in words is "two hundred twenty-eight million, three hundred forty-seven thousand, four hundred eighty-seven".