20427453 has 12 divisors (see below), whose sum is σ = 29706300. Its totient is φ = 13526016.

The previous prime is 20427439. The next prime is 20427457. The reversal of 20427453 is 35472402.

20427453 is a `hidden beast` number, since 204 + 2 + 7 + 453 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2762244 + 17665209 = 1662^2 + 4203^2 .

It is not a de Polignac number, because 20427453 - 2⁴ = 20427437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20427457) 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, 6276 + ... + 8957.

It is an arithmetic number, because the mean of its divisors is an integer number (2475525).

Almost surely, 2^20427453 is an apocalyptic number.

It is an amenable number.

20427453 is a deficient number, since it is larger than the sum of its proper divisors (9278847).

20427453 is a wasteful number, since it uses less digits than its factorization.

20427453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388 (or 15385 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 20427453 is about 4519.6739926681. The cubic root of 20427453 is about 273.3619559887.

Adding to 20427453 its reverse (35472402), we get a palindrome (55899855).

The spelling of 20427453 in words is "twenty million, four hundred twenty-seven thousand, four hundred fifty-three".