228077197 has 12 divisors (see below), whose sum is σ = 242116320. Its totient is φ = 214256016.

The previous prime is 228077173. The next prime is 228077207. The reversal of 228077197 is 791770822.

It is a happy number.

228077197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-228077197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228077107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468088 + ... + 468574.

It is an arithmetic number, because the mean of its divisors is an integer number (20176360).

Almost surely, 2^228077197 is an apocalyptic number.

It is an amenable number.

228077197 is a deficient number, since it is larger than the sum of its proper divisors (14039123).

228077197 is an equidigital number, since it uses as much as digits as its factorization.

228077197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 663 counting only the distinct ones).

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

The square root of 228077197 is about 15102.2249023116. The cubic root of 228077197 is about 610.9804147967.

The spelling of 228077197 in words is "two hundred twenty-eight million, seventy-seven thousand, one hundred ninety-seven".