228777 has 4 divisors (see below), whose sum is σ = 305040. Its totient is φ = 152516.

The previous prime is 228773. The next prime is 228793. The reversal of 228777 is 777822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228777 - 2² = 228773 is a prime.

It is a D-number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (228773) 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, 38127 + ... + 38132.

It is an arithmetic number, because the mean of its divisors is an integer number (76260).

2²²⁸⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

228777 is a deficient number, since it is larger than the sum of its proper divisors (76263).

228777 is an equidigital number, since it uses as much as digits as its factorization.

228777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76262.

The product of its digits is 10976, while the sum is 33.

The square root of 228777 is about 478.3063871620. The cubic root of 228777 is about 61.1604661587.

The spelling of 228777 in words is "two hundred twenty-eight thousand, seven hundred seventy-seven".