20188132 has 6 divisors (see below), whose sum is σ = 35329238. Its totient is φ = 10094064.

The previous prime is 20188111. The next prime is 20188141. The reversal of 20188132 is 23188102.

It can be written as a sum of positive squares in only one way, i.e., 18610596 + 1577536 = 4314^2 + 1256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20188097 and 20188106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2523513 + ... + 2523520.

Almost surely, 2^20188132 is an apocalyptic number.

It is an amenable number.

20188132 is a deficient number, since it is larger than the sum of its proper divisors (15141106).

20188132 is a wasteful number, since it uses less digits than its factorization.

20188132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047037 (or 5047035 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 20188132 is about 4493.1205191938. The cubic root of 20188132 is about 272.2902215122.

The spelling of 20188132 in words is "twenty million, one hundred eighty-eight thousand, one hundred thirty-two".