144434340 has 144 divisors (see below), whose sum is σ = 460107648. Its totient is φ = 38029824.

The previous prime is 144434317. The next prime is 144434341. The reversal of 144434340 is 43434441.

It is a super-2 number, since 2×144434340² = 41722557142471200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (144434341) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 549049 + ... + 549311.

It is an arithmetic number, because the mean of its divisors is an integer number (3195192).

Almost surely, 2^144434340 is an apocalyptic number.

144434340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144434340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230053824).

144434340 is an abundant number, since it is smaller than the sum of its proper divisors (315673308).

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

144434340 is a wasteful number, since it uses less digits than its factorization.

144434340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 144434340 is about 12018.0838738960. The cubic root of 144434340 is about 524.6747373013.

Adding to 144434340 its reverse (43434441), we get a palindrome (187868781).

The spelling of 144434340 in words is "one hundred forty-four million, four hundred thirty-four thousand, three hundred forty".