144344420 has 48 divisors (see below), whose sum is σ = 335373696. Its totient is φ = 51744000.

The previous prime is 144344419. The next prime is 144344471. The reversal of 144344420 is 24443441.

144344420 = 339² + 340² + ... + 778².

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 144344420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11000 + ... + 20240.

It is an arithmetic number, because the mean of its divisors is an integer number (6986952).

Almost surely, 2^144344420 is an apocalyptic number.

144344420 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 144344420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167686848).

144344420 is an abundant number, since it is smaller than the sum of its proper divisors (191029276).

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

144344420 is a wasteful number, since it uses less digits than its factorization.

144344420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332 (or 9330 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 144344420 is about 12014.3422624795. The cubic root of 144344420 is about 524.5658330375.

Adding to 144344420 its reverse (24443441), we get a palindrome (168787861).

It can be divided in two parts, 14 and 4344420, that added together give a palindrome (4344434).

The spelling of 144344420 in words is "one hundred forty-four million, three hundred forty-four thousand, four hundred twenty".