228150321 has 24 divisors (see below), whose sum is σ = 354913920. Its totient is φ = 129985632.

The previous prime is 228150313. The next prime is 228150379. The reversal of 228150321 is 123051822.

It is not a de Polignac number, because 228150321 - 2³ = 228150313 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 228150291 and 228150300.

It is not an unprimeable number, because it can be changed into a prime (228150301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51835 + ... + 56063.

It is an arithmetic number, because the mean of its divisors is an integer number (14788080).

Almost surely, 2^228150321 is an apocalyptic number.

228150321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

228150321 is a deficient number, since it is larger than the sum of its proper divisors (126763599).

228150321 is a wasteful number, since it uses less digits than its factorization.

228150321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613 (or 4606 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 228150321 is about 15104.6456760826. The cubic root of 228150321 is about 611.0457034484.

The spelling of 228150321 in words is "two hundred twenty-eight million, one hundred fifty thousand, three hundred twenty-one".