12454400224 has 24 divisors (see below), whose sum is σ = 28022401008. Its totient is φ = 5337600000.

The previous prime is 12454400201. The next prime is 12454400239. The reversal of 12454400224 is 42200445421.

It is a super-2 number, since 2×12454400224² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 12454400192 and 12454400201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27799777 + ... + 27800224.

It is an arithmetic number, because the mean of its divisors is an integer number (1167600042).

Almost surely, 2^12454400224 is an apocalyptic number.

12454400224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12454400224 is an abundant number, since it is smaller than the sum of its proper divisors (15568000784).

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

12454400224 is an equidigital number, since it uses as much as digits as its factorization.

12454400224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55600018 (or 55600010 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 12454400224 its reverse (42200445421), we get a palindrome (54654845645).

The spelling of 12454400224 in words is "twelve billion, four hundred fifty-four million, four hundred thousand, two hundred twenty-four".