167228321 has 8 divisors (see below), whose sum is σ = 180587904. Its totient is φ = 153939600.

The previous prime is 167228309. The next prime is 167228339. The reversal of 167228321 is 123822761.

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 167228321 - 2¹⁰ = 167227297 is a prime.

It is a super-2 number, since 2×167228321² = 55930622688958082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (167228821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12755 + ... + 22296.

It is an arithmetic number, because the mean of its divisors is an integer number (22573488).

Almost surely, 2^167228321 is an apocalyptic number.

It is an amenable number.

167228321 is a deficient number, since it is larger than the sum of its proper divisors (13359583).

167228321 is a wasteful number, since it uses less digits than its factorization.

167228321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35431.

The product of its digits is 8064, while the sum is 32.

The square root of 167228321 is about 12931.6789706519. The cubic root of 167228321 is about 550.9386956212.

The spelling of 167228321 in words is "one hundred sixty-seven million, two hundred twenty-eight thousand, three hundred twenty-one".