20106254 has 16 divisors (see below), whose sum is σ = 34699776. Its totient is φ = 8559000.

The previous prime is 20106253. The next prime is 20106283. The reversal of 20106254 is 45260102.

It is a happy number.

It is a super-2 number, since 2×20106254² = 808522899825032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2642 + ... + 6869.

It is an arithmetic number, because the mean of its divisors is an integer number (2168736).

Almost surely, 2^20106254 is an apocalyptic number.

20106254 is a deficient number, since it is larger than the sum of its proper divisors (14593522).

20106254 is a wasteful number, since it uses less digits than its factorization.

20106254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20106254 is about 4483.9997769848. Note that the first 3 decimals coincide. The cubic root of 20106254 is about 271.9216091139.

Adding to 20106254 its reverse (45260102), we get a palindrome (65366356).

The spelling of 20106254 in words is "twenty million, one hundred six thousand, two hundred fifty-four".