20126260 has 72 divisors (see below), whose sum is σ = 53663904. Its totient is φ = 6269760.

The previous prime is 20126251. The next prime is 20126287. The reversal of 20126260 is 6262102.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9847 + ... + 11713.

It is an arithmetic number, because the mean of its divisors is an integer number (745332).

Almost surely, 2^20126260 is an apocalyptic number.

20126260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20126260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26831952).

20126260 is an abundant number, since it is smaller than the sum of its proper divisors (33537644).

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

20126260 is a wasteful number, since it uses less digits than its factorization.

20126260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20126260 is about 4486.2300431431. The cubic root of 20126260 is about 272.0117678011.

Adding to 20126260 its reverse (6262102), we get a palindrome (26388362).

The spelling of 20126260 in words is "twenty million, one hundred twenty-six thousand, two hundred sixty".