228144775 has 12 divisors (see below), whose sum is σ = 290546632. Its totient is φ = 177582240.

The previous prime is 228144767. The next prime is 228144781. The reversal of 228144775 is 577441822.

It is not a de Polignac number, because 228144775 - 2³ = 228144767 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122397 + ... + 124246.

Almost surely, 2^228144775 is an apocalyptic number.

228144775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228144775 is a deficient number, since it is larger than the sum of its proper divisors (62401857).

228144775 is a wasteful number, since it uses less digits than its factorization.

228144775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246690 (or 246685 counting only the distinct ones).

The product of its digits is 125440, while the sum is 40.

The square root of 228144775 is about 15104.4620890649. The cubic root of 228144775 is about 611.0407521997.

The spelling of 228144775 in words is "two hundred twenty-eight million, one hundred forty-four thousand, seven hundred seventy-five".