228484643 has 4 divisors (see below), whose sum is σ = 232795728. Its totient is φ = 224173560.

The previous prime is 228484637. The next prime is 228484651. The reversal of 228484643 is 346484822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228484643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228484643.

It is not an unprimeable number, because it can be changed into a prime (228487643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2155463 + ... + 2155568.

It is an arithmetic number, because the mean of its divisors is an integer number (58198932).

Almost surely, 2^228484643 is an apocalyptic number.

228484643 is a deficient number, since it is larger than the sum of its proper divisors (4311085).

228484643 is an equidigital number, since it uses as much as digits as its factorization.

228484643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311084.

The product of its digits is 294912, while the sum is 41.

The square root of 228484643 is about 15115.7084848842. The cubic root of 228484643 is about 611.3440247742.

The spelling of 228484643 in words is "two hundred twenty-eight million, four hundred eighty-four thousand, six hundred forty-three".