20166532 has 6 divisors (see below), whose sum is σ = 35291438. Its totient is φ = 10083264.

The previous prime is 20166529. The next prime is 20166541. The reversal of 20166532 is 23566102.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 1382976 = 4334^2 + 1176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20166497 and 20166506.

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 as a sum of consecutive naturals, namely, 2520813 + ... + 2520820.

Almost surely, 2^20166532 is an apocalyptic number.

It is an amenable number.

20166532 is a deficient number, since it is larger than the sum of its proper divisors (15124906).

20166532 is a wasteful number, since it uses less digits than its factorization.

20166532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041637 (or 5041635 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20166532 is about 4490.7162012312. The cubic root of 20166532 is about 272.1930758620.

The spelling of 20166532 in words is "twenty million, one hundred sixty-six thousand, five hundred thirty-two".