144322444 has 36 divisors (see below), whose sum is σ = 303942240. Its totient is φ = 59717280.

The previous prime is 144322439. The next prime is 144322457. The reversal of 144322444 is 444223441.

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7012 + ... + 18379.

It is an arithmetic number, because the mean of its divisors is an integer number (8442840).

Almost surely, 2^144322444 is an apocalyptic number.

144322444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

144322444 is an abundant number, since it is smaller than the sum of its proper divisors (159619796).

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

144322444 is a wasteful number, since it uses less digits than its factorization.

144322444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25438 (or 25429 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 144322444 is about 12013.4276540877. The cubic root of 144322444 is about 524.5392105008.

Adding to 144322444 its reverse (444223441), we get a palindrome (588545885).

The spelling of 144322444 in words is "one hundred forty-four million, three hundred twenty-two thousand, four hundred forty-four".