12843228440 has 32 divisors (see below), whose sum is σ = 33025445280. Its totient is φ = 4403392512.

The previous prime is 12843228439. The next prime is 12843228479. The reversal of 12843228440 is 4482234821.

It is a super-3 number, since 3×12843228440³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12843228394 and 12843228403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22934057 + ... + 22934616.

It is an arithmetic number, because the mean of its divisors is an integer number (1032045165).

Almost surely, 2^12843228440 is an apocalyptic number.

12843228440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12843228440 is an abundant number, since it is smaller than the sum of its proper divisors (20182216840).

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

12843228440 is a wasteful number, since it uses less digits than its factorization.

12843228440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45868691 (or 45868687 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 38.

The spelling of 12843228440 in words is "twelve billion, eight hundred forty-three million, two hundred twenty-eight thousand, four hundred forty".