20169232 has 10 divisors (see below), whose sum is σ = 39077918. Its totient is φ = 10084608.

The previous prime is 20169217. The next prime is 20169271. The reversal of 20169232 is 23296102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12418576 + 7750656 = 3524^2 + 2784^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20169197 and 20169206.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630273 + ... + 630304.

Almost surely, 2^20169232 is an apocalyptic number.

It is an amenable number.

20169232 is a deficient number, since it is larger than the sum of its proper divisors (18908686).

20169232 is a wasteful number, since it uses less digits than its factorization.

20169232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260585 (or 1260579 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20169232 is about 4491.0168113691. The cubic root of 20169232 is about 272.2052228606.

The spelling of 20169232 in words is "twenty million, one hundred sixty-nine thousand, two hundred thirty-two".