228107977 has 4 divisors (see below), whose sum is σ = 240113680. Its totient is φ = 216102276.

The previous prime is 228107963. The next prime is 228107981. The reversal of 228107977 is 779701822.

It is a happy number.

228107977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 de Polignac number, because none of the positive numbers 2^k-228107977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228107927) 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, 6002823 + ... + 6002860.

It is an arithmetic number, because the mean of its divisors is an integer number (60028420).

Almost surely, 2^228107977 is an apocalyptic number.

It is an amenable number.

228107977 is a deficient number, since it is larger than the sum of its proper divisors (12005703).

228107977 is a wasteful number, since it uses less digits than its factorization.

228107977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12005702.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 228107977 is about 15103.2439230782. The cubic root of 228107977 is about 611.0078983731.

The spelling of 228107977 in words is "two hundred twenty-eight million, one hundred seven thousand, nine hundred seventy-seven".