20273 has 8 divisors (see below), whose sum is σ = 23520. Its totient is φ = 17280.

The previous prime is 20269. The next prime is 20287. The reversal of 20273 is 37202.

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 20273 - 2² = 20269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20233) 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, 161 + ... + 257.

It is an arithmetic number, because the mean of its divisors is an integer number (2940).

2²⁰²⁷³ is an apocalyptic number.

It is an amenable number.

20273 is a deficient number, since it is larger than the sum of its proper divisors (3247).

20273 is a wasteful number, since it uses less digits than its factorization.

20273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 20273 is about 142.3832855359. The cubic root of 20273 is about 27.2671244383.

Adding to 20273 its reverse (37202), we get a palindrome (57475).

It can be divided in two parts, 20 and 273, that multiplied together give a triangular number (5460 = T₁₀₄).

The spelling of 20273 in words is "twenty thousand, two hundred seventy-three", and thus it is an iban number.