228144519 has 20 divisors (see below), whose sum is σ = 341832744. Its totient is φ = 151639344.

The previous prime is 228144517. The next prime is 228144523. The reversal of 228144519 is 915441822.

228144519 is a `hidden beast` number, since 22 + 81 + 44 + 519 = 666.

It is not a de Polignac number, because 228144519 - 2¹ = 228144517 is a prime.

It is a super-2 number, since 2×228144519² = 104099843099482722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144517) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24049 + ... + 32165.

Almost surely, 2^228144519 is an apocalyptic number.

228144519 is a deficient number, since it is larger than the sum of its proper divisors (113688225).

228144519 is an equidigital number, since it uses as much as digits as its factorization.

228144519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476 (or 8467 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 228144519 is about 15104.4536147456. The cubic root of 228144519 is about 611.0405236511.

The spelling of 228144519 in words is "two hundred twenty-eight million, one hundred forty-four thousand, five hundred nineteen".