228143545 has 16 divisors (see below), whose sum is σ = 329351040. Its totient is φ = 148207104.

The previous prime is 228143537. The next prime is 228143549. The reversal of 228143545 is 545341822.

It is a cyclic number.

It is not a de Polignac number, because 228143545 - 2³ = 228143537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228143545.

It is not an unprimeable number, because it can be changed into a prime (228143549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170872 + ... + 172201.

It is an arithmetic number, because the mean of its divisors is an integer number (20584440).

Almost surely, 2^228143545 is an apocalyptic number.

It is an amenable number.

228143545 is a deficient number, since it is larger than the sum of its proper divisors (101207495).

228143545 is a wasteful number, since it uses less digits than its factorization.

228143545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343104.

The product of its digits is 38400, while the sum is 34.

The square root of 228143545 is about 15104.4213725651. The cubic root of 228143545 is about 611.0396540936.

The spelling of 228143545 in words is "two hundred twenty-eight million, one hundred forty-three thousand, five hundred forty-five".