144563240 has 32 divisors (see below), whose sum is σ = 344402280. Its totient is φ = 54423552.

The previous prime is 144563239. The next prime is 144563249. The reversal of 144563240 is 42365441.

It can be written as a sum of positive squares in 4 ways, for example, as 123787876 + 20775364 = 11126^2 + 4558^2 .

It is not an unprimeable number, because it can be changed into a prime (144563249) 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 7 ways as a sum of consecutive naturals, for example, 105617 + ... + 106976.

Almost surely, 2^144563240 is an apocalyptic number.

144563240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144563240 is an abundant number, since it is smaller than the sum of its proper divisors (199839040).

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

144563240 is a wasteful number, since it uses less digits than its factorization.

144563240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212621 (or 212617 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 144563240 is about 12023.4454296595. The cubic root of 144563240 is about 524.8307723658.

The spelling of 144563240 in words is "one hundred forty-four million, five hundred sixty-three thousand, two hundred forty".