20540254 has 32 divisors (see below), whose sum is σ = 38085120. Its totient is φ = 8110368.

The previous prime is 20540251. The next prime is 20540279. The reversal of 20540254 is 45204502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540251) 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, 8799 + ... + 10885.

It is an arithmetic number, because the mean of its divisors is an integer number (1190160).

Almost surely, 2^20540254 is an apocalyptic number.

20540254 is a deficient number, since it is larger than the sum of its proper divisors (17544866).

20540254 is a wasteful number, since it uses less digits than its factorization.

20540254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 20540254 is about 4532.1356996454. The cubic root of 20540254 is about 273.8642035816.

Adding to 20540254 its reverse (45204502), we get a palindrome (65744756).

The spelling of 20540254 in words is "twenty million, five hundred forty thousand, two hundred fifty-four".