228144235 has 8 divisors (see below), whose sum is σ = 298661616. Its totient is φ = 165923040.

The previous prime is 228144173. The next prime is 228144281. The reversal of 228144235 is 532441822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-228144235 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228144197 and 228144206.

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, 2073984 + ... + 2074093.

It is an arithmetic number, because the mean of its divisors is an integer number (37332702).

Almost surely, 2^228144235 is an apocalyptic number.

228144235 is a deficient number, since it is larger than the sum of its proper divisors (70517381).

228144235 is a wasteful number, since it uses less digits than its factorization.

228144235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148093.

The product of its digits is 15360, while the sum is 31.

The square root of 228144235 is about 15104.4442135419. Note that the first 3 decimals coincide. The cubic root of 228144235 is about 611.0402701048.

The spelling of 228144235 in words is "two hundred twenty-eight million, one hundred forty-four thousand, two hundred thirty-five".