20892117 has 8 divisors (see below), whose sum is σ = 28057120. Its totient is φ = 13827600.

The previous prime is 20892101. The next prime is 20892121. The reversal of 20892117 is 71129802.

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

It is not a de Polignac number, because 20892117 - 2⁴ = 20892101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20892197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24634 + ... + 25467.

It is an arithmetic number, because the mean of its divisors is an integer number (3507140).

Almost surely, 2^20892117 is an apocalyptic number.

It is an amenable number.

20892117 is a deficient number, since it is larger than the sum of its proper divisors (7165003).

20892117 is a wasteful number, since it uses less digits than its factorization.

20892117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50243.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 20892117 is about 4570.7895379245. The cubic root of 20892117 is about 275.4191602324.

The spelling of 20892117 in words is "twenty million, eight hundred ninety-two thousand, one hundred seventeen".