26402444220 has 24 divisors (see below), whose sum is σ = 73926843984. Its totient is φ = 7040651776.

The previous prime is 26402444203. The next prime is 26402444221. The reversal of 26402444220 is 2244420462.

It is a super-2 number, since 2×26402444220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26402444221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220020309 + ... + 220020428.

It is an arithmetic number, because the mean of its divisors is an integer number (3080285166).

Almost surely, 2^26402444220 is an apocalyptic number.

26402444220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26402444220 is an abundant number, since it is smaller than the sum of its proper divisors (47524399764).

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

26402444220 is a wasteful number, since it uses less digits than its factorization.

26402444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440040749 (or 440040747 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 26402444220 its reverse (2244420462), we get a palindrome (28646864682).

The spelling of 26402444220 in words is "twenty-six billion, four hundred two million, four hundred forty-four thousand, two hundred twenty".