1244145344 has 56 divisors (see below), whose sum is σ = 2663116848. Its totient is φ = 573281280.

The previous prime is 1244145341. The next prime is 1244145347. The reversal of 1244145344 is 4435414421.

It is an interprime number because it is at equal distance from previous prime (1244145341) and next prime (1244145347).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1244145344.

It is not an unprimeable number, because it can be changed into a prime (1244145341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973634 + ... + 974910.

It is an arithmetic number, because the mean of its divisors is an integer number (47555658).

Almost surely, 2^1244145344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244145344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331558424).

1244145344 is an abundant number, since it is smaller than the sum of its proper divisors (1418971504).

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

1244145344 is a wasteful number, since it uses less digits than its factorization.

1244145344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473 (or 2463 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

The square root of 1244145344 is about 35272.4445424470. Note that the first 3 decimals coincide. The cubic root of 1244145344 is about 1075.5329159403.

Adding to 1244145344 its reverse (4435414421), we get a palindrome (5679559765).

The spelling of 1244145344 in words is "one billion, two hundred forty-four million, one hundred forty-five thousand, three hundred forty-four".