228144719 has 4 divisors (see below), whose sum is σ = 248885160. Its totient is φ = 207404280.

The previous prime is 228144703. The next prime is 228144727. The reversal of 228144719 is 917441822.

It is a happy number.

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 228144719 - 2⁴ = 228144703 is a prime.

It is a super-2 number, since 2×228144719² = 104100025615177922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228144019) 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, 10370204 + ... + 10370225.

It is an arithmetic number, because the mean of its divisors is an integer number (62221290).

Almost surely, 2^228144719 is an apocalyptic number.

228144719 is a deficient number, since it is larger than the sum of its proper divisors (20740441).

228144719 is a wasteful number, since it uses less digits than its factorization.

228144719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20740440.

The product of its digits is 32256, while the sum is 38.

The square root of 228144719 is about 15104.4602353080. The cubic root of 228144719 is about 611.0407022047.

The spelling of 228144719 in words is "two hundred twenty-eight million, one hundred forty-four thousand, seven hundred nineteen".