144530440 has 32 divisors (see below), whose sum is σ = 329780160. Its totient is φ = 56996800.

The previous prime is 144530387. The next prime is 144530483. The reversal of 144530440 is 44035441.

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 7 ways as a sum of consecutive naturals, for example, 22606 + ... + 28285.

It is an arithmetic number, because the mean of its divisors is an integer number (10305630).

Almost surely, 2^144530440 is an apocalyptic number.

144530440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144530440 is an abundant number, since it is smaller than the sum of its proper divisors (185249720).

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

144530440 is a wasteful number, since it uses less digits than its factorization.

144530440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50973 (or 50969 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144530440 is about 12022.0813505815. The cubic root of 144530440 is about 524.7910763559.

Adding to 144530440 its reverse (44035441), we get a palindrome (188565881).

The spelling of 144530440 in words is "one hundred forty-four million, five hundred thirty thousand, four hundred forty".