228486777 has 4 divisors (see below), whose sum is σ = 304649040. Its totient is φ = 152324516.

The previous prime is 228486767. The next prime is 228486779. The reversal of 228486777 is 777684822.

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 228486777 - 2⁸ = 228486521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228486779) 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, 38081127 + ... + 38081132.

It is an arithmetic number, because the mean of its divisors is an integer number (76162260).

Almost surely, 2^228486777 is an apocalyptic number.

It is an amenable number.

228486777 is a deficient number, since it is larger than the sum of its proper divisors (76162263).

228486777 is an equidigital number, since it uses as much as digits as its factorization.

228486777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76162262.

The product of its digits is 2107392, while the sum is 51.

The square root of 228486777 is about 15115.7790735377. The cubic root of 228486777 is about 611.3459280444.

The spelling of 228486777 in words is "two hundred twenty-eight million, four hundred eighty-six thousand, seven hundred seventy-seven".