20146263 has 4 divisors (see below), whose sum is σ = 26861688. Its totient is φ = 13430840.

The previous prime is 20146253. The next prime is 20146267. The reversal of 20146263 is 36264102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20146263 - 2¹³ = 20138071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3357708 + ... + 3357713.

It is an arithmetic number, because the mean of its divisors is an integer number (6715422).

Almost surely, 2^20146263 is an apocalyptic number.

20146263 is a deficient number, since it is larger than the sum of its proper divisors (6715425).

20146263 is an equidigital number, since it uses as much as digits as its factorization.

20146263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715424.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20146263 is about 4488.4588669163. The cubic root of 20146263 is about 272.1018532552.

It can be divided in two parts, 201 and 46263, that added together give a palindrome (46464).

The spelling of 20146263 in words is "twenty million, one hundred forty-six thousand, two hundred sixty-three".