228117395 has 16 divisors (see below), whose sum is σ = 306700128. Its totient is φ = 161418240.

The previous prime is 228117371. The next prime is 228117397. The reversal of 228117395 is 593711822.

It is a de Polignac number, because none of the positive numbers 2^k-228117395 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228117397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54014 + ... + 58083.

It is an arithmetic number, because the mean of its divisors is an integer number (19168758).

Almost surely, 2^228117395 is an apocalyptic number.

228117395 is a deficient number, since it is larger than the sum of its proper divisors (78582733).

228117395 is a wasteful number, since it uses less digits than its factorization.

228117395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112150.

The product of its digits is 30240, while the sum is 38.

The square root of 228117395 is about 15103.5557071837. Note that the first 3 decimals coincide. The cubic root of 228117395 is about 611.0163072464.

The spelling of 228117395 in words is "two hundred twenty-eight million, one hundred seventeen thousand, three hundred ninety-five".