12281193628 has 72 divisors (see below), whose sum is σ = 25474170960. Its totient is φ = 5159404800.

The previous prime is 12281193619. The next prime is 12281193637. The reversal of 12281193628 is 82639118221.

It is an interprime number because it is at equal distance from previous prime (12281193619) and next prime (12281193637).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 360750 + ... + 393322.

It is an arithmetic number, because the mean of its divisors is an integer number (353807930).

Almost surely, 2^12281193628 is an apocalyptic number.

It is an amenable number.

12281193628 is an abundant number, since it is smaller than the sum of its proper divisors (13192977332).

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

12281193628 is a wasteful number, since it uses less digits than its factorization.

12281193628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32659 (or 32646 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The spelling of 12281193628 in words is "twelve billion, two hundred eighty-one million, one hundred ninety-three thousand, six hundred twenty-eight".