166226530 has 16 divisors (see below), whose sum is σ = 299961144. Its totient is φ = 66323200.

The previous prime is 166226513. The next prime is 166226537. The reversal of 166226530 is 35622661.

It can be written as a sum of positive squares in 4 ways, for example, as 144408289 + 21818241 = 12017^2 + 4671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166226492 and 166226501.

It is not an unprimeable number, because it can be changed into a prime (166226537) 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 7 ways as a sum of consecutive naturals, for example, 16717 + ... + 24736.

Almost surely, 2^166226530 is an apocalyptic number.

166226530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166226530 is a deficient number, since it is larger than the sum of its proper divisors (133734614).

166226530 is a wasteful number, since it uses less digits than its factorization.

166226530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41861.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 166226530 is about 12892.8867985413. The cubic root of 166226530 is about 549.8363480045.

The spelling of 166226530 in words is "one hundred sixty-six million, two hundred twenty-six thousand, five hundred thirty".