20914165 has 8 divisors (see below), whose sum is σ = 26573400. Its totient is φ = 15747072.

The previous prime is 20914163. The next prime is 20914169. The reversal of 20914165 is 56141902.

It can be written as a sum of positive squares in 4 ways, for example, as 10712529 + 10201636 = 3273^2 + 3194^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20914165 - 2¹ = 20914163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20914163) 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, 122940 + ... + 123109.

It is an arithmetic number, because the mean of its divisors is an integer number (3321675).

Almost surely, 2^20914165 is an apocalyptic number.

It is an amenable number.

20914165 is a deficient number, since it is larger than the sum of its proper divisors (5659235).

20914165 is a wasteful number, since it uses less digits than its factorization.

20914165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246071.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 20914165 is about 4573.2007390885. The cubic root of 20914165 is about 275.5160118625.

The spelling of 20914165 in words is "twenty million, nine hundred fourteen thousand, one hundred sixty-five".