228321147 has 8 divisors (see below), whose sum is σ = 314925840. Its totient is φ = 146965280.

The previous prime is 228321073. The next prime is 228321167. The reversal of 228321147 is 741123822.

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

It is a cyclic number.

It is not a de Polignac number, because 228321147 - 2¹⁸ = 228059003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228321167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312104 + ... + 1312277.

It is an arithmetic number, because the mean of its divisors is an integer number (39365730).

Almost surely, 2^228321147 is an apocalyptic number.

228321147 is a deficient number, since it is larger than the sum of its proper divisors (86604693).

228321147 is a wasteful number, since it uses less digits than its factorization.

228321147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624413.

The product of its digits is 5376, while the sum is 30.

The square root of 228321147 is about 15110.2993683117. The cubic root of 228321147 is about 611.1981708389.

Adding to 228321147 its reverse (741123822), we get a palindrome (969444969).

The spelling of 228321147 in words is "two hundred twenty-eight million, three hundred twenty-one thousand, one hundred forty-seven".