1224278244 has 36 divisors (see below), whose sum is σ = 3536804544. Its totient is φ = 349793712.

The previous prime is 1224278233. The next prime is 1224278249. The reversal of 1224278244 is 4428724221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1224278199 and 1224278208.

It is not an unprimeable number, because it can be changed into a prime (1224278249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2428872 + ... + 2429375.

Almost surely, 2^1224278244 is an apocalyptic number.

1224278244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1224278244 is an abundant number, since it is smaller than the sum of its proper divisors (2312526300).

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

1224278244 is a wasteful number, since it uses less digits than its factorization.

1224278244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858264 (or 4858259 counting only the distinct ones).

The product of its digits is 57344, while the sum is 36.

The square root of 1224278244 is about 34989.6876808010. The cubic root of 1224278244 is about 1069.7772978155. Note that the first 3 decimals are identical.

The spelling of 1224278244 in words is "one billion, two hundred twenty-four million, two hundred seventy-eight thousand, two hundred forty-four".