16166544 has 20 divisors (see below), whose sum is σ = 41763696. Its totient is φ = 5388832.

The previous prime is 16166533. The next prime is 16166569. The reversal of 16166544 is 44566161.

It is a happy number.

It is a super-2 number, since 2×16166544² = 522714289807872, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 168354 + ... + 168449.

Almost surely, 2^16166544 is an apocalyptic number.

It is an amenable number.

16166544 is an abundant number, since it is smaller than the sum of its proper divisors (25597152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16166544 is a wasteful number, since it uses less digits than its factorization.

16166544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336814 (or 336808 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 16166544 is about 4020.7641064852. The cubic root of 16166544 is about 252.8554950805.

The spelling of 16166544 in words is "sixteen million, one hundred sixty-six thousand, five hundred forty-four".