228143465 has 16 divisors (see below), whose sum is σ = 298964736. Its totient is φ = 165753600.

The previous prime is 228143459. The next prime is 228143483. The reversal of 228143465 is 564341822.

228143465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228143465 - 2⁴ = 228143449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84080 + ... + 86750.

It is an arithmetic number, because the mean of its divisors is an integer number (18685296).

Almost surely, 2^228143465 is an apocalyptic number.

It is an amenable number.

228143465 is a deficient number, since it is larger than the sum of its proper divisors (70821271).

228143465 is a wasteful number, since it uses less digits than its factorization.

228143465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240.

The product of its digits is 46080, while the sum is 35.

The square root of 228143465 is about 15104.4187243336. The cubic root of 228143465 is about 611.0395826719.

The spelling of 228143465 in words is "two hundred twenty-eight million, one hundred forty-three thousand, four hundred sixty-five".