166826426 has 16 divisors (see below), whose sum is σ = 270177768. Its totient is φ = 76800000.

The previous prime is 166826411. The next prime is 166826477. The reversal of 166826426 is 624628661.

It can be written as a sum of positive squares in 4 ways, for example, as 166384201 + 442225 = 12899^2 + 665^2 .

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, 2426 + ... + 18426.

Almost surely, 2^166826426 is an apocalyptic number.

166826426 is a deficient number, since it is larger than the sum of its proper divisors (103351342).

166826426 is a wasteful number, since it uses less digits than its factorization.

166826426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16417.

The product of its digits is 165888, while the sum is 41.

The square root of 166826426 is about 12916.1304576874. The cubic root of 166826426 is about 550.4969898942.

The spelling of 166826426 in words is "one hundred sixty-six million, eight hundred twenty-six thousand, four hundred twenty-six".