20273117 has 4 divisors (see below), whose sum is σ = 20972220. Its totient is φ = 19574016.

The previous prime is 20273111. The next prime is 20273119. The reversal of 20273117 is 71137202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16168441 + 4104676 = 4021^2 + 2026^2 .

It is a cyclic number.

It is not a de Polignac number, because 20273117 - 2⁶ = 20273053 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20273092 and 20273101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20273111) 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, 349508 + ... + 349565.

It is an arithmetic number, because the mean of its divisors is an integer number (5243055).

Almost surely, 2^20273117 is an apocalyptic number.

It is an amenable number.

20273117 is a deficient number, since it is larger than the sum of its proper divisors (699103).

20273117 is an equidigital number, since it uses as much as digits as its factorization.

20273117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699102.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 20273117 is about 4502.5678229206. The cubic root of 20273117 is about 272.6717689306.

The spelling of 20273117 in words is "twenty million, two hundred seventy-three thousand, one hundred seventeen".