20539118 has 8 divisors (see below), whose sum is σ = 31268712. Its totient is φ = 10116216.

The previous prime is 20539117. The next prime is 20539121. The reversal of 20539118 is 81193502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20539117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76505 + ... + 76772.

It is an arithmetic number, because the mean of its divisors is an integer number (3908589).

Almost surely, 2^20539118 is an apocalyptic number.

20539118 is a deficient number, since it is larger than the sum of its proper divisors (10729594).

20539118 is a wasteful number, since it uses less digits than its factorization.

20539118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153346.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 20539118 is about 4532.0103706854. The cubic root of 20539118 is about 273.8591547075.

The spelling of 20539118 in words is "twenty million, five hundred thirty-nine thousand, one hundred eighteen".