12227526738 has 96 divisors (see below), whose sum is σ = 31403049600. Its totient is φ = 3436201440.

The previous prime is 12227526691. The next prime is 12227526739. The reversal of 12227526738 is 83762572221.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12227526693 and 12227526702.

It is not an unprimeable number, because it can be changed into a prime (12227526739) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 360381 + ... + 392847.

It is an arithmetic number, because the mean of its divisors is an integer number (327115100).

Almost surely, 2^12227526738 is an apocalyptic number.

12227526738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12227526738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15701524800).

12227526738 is an abundant number, since it is smaller than the sum of its proper divisors (19175522862).

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

12227526738 is a wasteful number, since it uses less digits than its factorization.

12227526738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32557 (or 32540 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 12227526738 in words is "twelve billion, two hundred twenty-seven million, five hundred twenty-six thousand, seven hundred thirty-eight".