20440500726 has 16 divisors (see below), whose sum is σ = 41831722944. Its totient is φ = 6655046664.

The previous prime is 20440500697. The next prime is 20440500727. The reversal of 20440500726 is 62700504402.

It is a junction number, because it is equal to n+sod(n) for n = 20440500693 and 20440500702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440500727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39613116 + ... + 39613631.

It is an arithmetic number, because the mean of its divisors is an integer number (2614482684).

Almost surely, 2^20440500726 is an apocalyptic number.

20440500726 is an abundant number, since it is smaller than the sum of its proper divisors (21391222218).

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

20440500726 is a wasteful number, since it uses less digits than its factorization.

20440500726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79226795.

The product of its (nonzero) digits is 13440, while the sum is 30.

The spelling of 20440500726 in words is "twenty billion, four hundred forty million, five hundred thousand, seven hundred twenty-six".