20101326 has 16 divisors (see below), whose sum is σ = 45945984. Its totient is φ = 5743224.

The previous prime is 20101309. The next prime is 20101331. The reversal of 20101326 is 62310102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 239260 + ... + 239343.

It is an arithmetic number, because the mean of its divisors is an integer number (2871624).

Almost surely, 2^20101326 is an apocalyptic number.

20101326 is an abundant number, since it is smaller than the sum of its proper divisors (25844658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101326 is a wasteful number, since it uses less digits than its factorization.

20101326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478615.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20101326 is about 4483.4502339158. The cubic root of 20101326 is about 271.8993914964.

Adding to 20101326 its reverse (62310102), we get a palindrome (82411428).

The spelling of 20101326 in words is "twenty million, one hundred one thousand, three hundred twenty-six".