20176138 has 16 divisors (see below), whose sum is σ = 32245920. Its totient is φ = 9440496.

The previous prime is 20176111. The next prime is 20176147. The reversal of 20176138 is 83167102.

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 7 ways as a sum of consecutive naturals, for example, 45 + ... + 6352.

It is an arithmetic number, because the mean of its divisors is an integer number (2015370).

Almost surely, 2^20176138 is an apocalyptic number.

20176138 is a deficient number, since it is larger than the sum of its proper divisors (12069782).

20176138 is a wasteful number, since it uses less digits than its factorization.

20176138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 20176138 is about 4491.7856137621. The cubic root of 20176138 is about 272.2362872521.

The spelling of 20176138 in words is "twenty million, one hundred seventy-six thousand, one hundred thirty-eight".