20187148 has 6 divisors (see below), whose sum is σ = 35327516. Its totient is φ = 10093572.

The previous prime is 20187137. The next prime is 20187151. The reversal of 20187148 is 84178102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2523390 + ... + 2523397.

Almost surely, 2^20187148 is an apocalyptic number.

It is an amenable number.

20187148 is a deficient number, since it is larger than the sum of its proper divisors (15140368).

20187148 is a wasteful number, since it uses less digits than its factorization.

20187148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5046791 (or 5046789 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 20187148 is about 4493.0110171243. The cubic root of 20187148 is about 272.2857974950.

The spelling of 20187148 in words is "twenty million, one hundred eighty-seven thousand, one hundred forty-eight".