20253726 has 80 divisors (see below), whose sum is σ = 48554880. Its totient is φ = 6298560.

The previous prime is 20253721. The next prime is 20253733. The reversal of 20253726 is 62735202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20253726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253721) 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 39 ways as a sum of consecutive naturals, for example, 185760 + ... + 185868.

It is an arithmetic number, because the mean of its divisors is an integer number (606936).

Almost surely, 2^20253726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20253726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24277440).

20253726 is an abundant number, since it is smaller than the sum of its proper divisors (28301154).

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

20253726 is a wasteful number, since it uses less digits than its factorization.

20253726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20253726 is about 4500.4139809578. The cubic root of 20253726 is about 272.5848054090.

Adding to 20253726 its reverse (62735202), we get a palindrome (82988928).

The spelling of 20253726 in words is "twenty million, two hundred fifty-three thousand, seven hundred twenty-six".