228142663 has 4 divisors (see below), whose sum is σ = 260734480. Its totient is φ = 195550848.

The previous prime is 228142661. The next prime is 228142679. The reversal of 228142663 is 366241822.

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

It is a cyclic number.

It is not a de Polignac number, because 228142663 - 2¹ = 228142661 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 (228142661) 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, 16295898 + ... + 16295911.

It is an arithmetic number, because the mean of its divisors is an integer number (65183620).

Almost surely, 2^228142663 is an apocalyptic number.

228142663 is a deficient number, since it is larger than the sum of its proper divisors (32591817).

228142663 is an equidigital number, since it uses as much as digits as its factorization.

228142663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32591816.

The product of its digits is 27648, while the sum is 34.

The square root of 228142663 is about 15104.3921757878. The cubic root of 228142663 is about 611.0388666688.

It can be divided in two parts, 2281 and 42663, that added together give a palindrome (44944).

The spelling of 228142663 in words is "two hundred twenty-eight million, one hundred forty-two thousand, six hundred sixty-three".