20540273 has 16 divisors (see below), whose sum is σ = 23493120. Its totient is φ = 17801856.

The previous prime is 20540251. The next prime is 20540279. The reversal of 20540273 is 37204502.

It is a cyclic number.

It is not a de Polignac number, because 20540273 - 2⁶ = 20540209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20540279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33536 + ... + 34142.

It is an arithmetic number, because the mean of its divisors is an integer number (1468320).

Almost surely, 2^20540273 is an apocalyptic number.

It is an amenable number.

20540273 is a deficient number, since it is larger than the sum of its proper divisors (2952847).

20540273 is a wasteful number, since it uses less digits than its factorization.

20540273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20540273 is about 4532.1377957869. The cubic root of 20540273 is about 273.8642880242.

Adding to 20540273 its reverse (37204502), we get a palindrome (57744775).

The spelling of 20540273 in words is "twenty million, five hundred forty thousand, two hundred seventy-three".