20427273 has 12 divisors (see below), whose sum is σ = 29684928. Its totient is φ = 13535640.

The previous prime is 20427271. The next prime is 20427283. The reversal of 20427273 is 37272402.

It is not a de Polignac number, because 20427273 - 2¹ = 20427271 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20427271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5293 + ... + 8298.

It is an arithmetic number, because the mean of its divisors is an integer number (2473744).

Almost surely, 2^20427273 is an apocalyptic number.

It is an amenable number.

20427273 is a deficient number, since it is larger than the sum of its proper divisors (9257655).

20427273 is a wasteful number, since it uses less digits than its factorization.

20427273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13764 (or 13761 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20427273 is about 4519.6540796835. The cubic root of 20427273 is about 273.3611530611.

Adding to 20427273 its reverse (37272402), we get a palindrome (57699675).

The spelling of 20427273 in words is "twenty million, four hundred twenty-seven thousand, two hundred seventy-three".