228120134 has 16 divisors (see below), whose sum is σ = 385330176. Its totient is φ = 100345800.

The previous prime is 228120107. The next prime is 228120157. The reversal of 228120134 is 431021822.

It is a happy number.

228120134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166562 + ... + 167925.

It is an arithmetic number, because the mean of its divisors is an integer number (24083136).

Almost surely, 2^228120134 is an apocalyptic number.

228120134 is a deficient number, since it is larger than the sum of its proper divisors (157210042).

228120134 is a wasteful number, since it uses less digits than its factorization.

228120134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334531.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 228120134 is about 15103.6463809240. The cubic root of 228120134 is about 611.0187527225.

Adding to 228120134 its reverse (431021822), we get a palindrome (659141956).

The spelling of 228120134 in words is "two hundred twenty-eight million, one hundred twenty thousand, one hundred thirty-four".