144373440 has 112 divisors (see below), whose sum is σ = 463235040. Its totient is φ = 38092800.

The previous prime is 144373421. The next prime is 144373451. The reversal of 144373440 is 44373441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 144373398 and 144373407.

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 15 ways as a sum of consecutive naturals, for example, 96216 + ... + 97704.

Almost surely, 2^144373440 is an apocalyptic number.

144373440 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 144373440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231617520).

144373440 is an abundant number, since it is smaller than the sum of its proper divisors (318861600).

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

144373440 is a wasteful number, since it uses less digits than its factorization.

144373440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 144373440 is about 12015.5499249930. The cubic root of 144373440 is about 524.6009847956.

Subtracting from 144373440 its reverse (44373441), we obtain a palindrome (99999999).

The spelling of 144373440 in words is "one hundred forty-four million, three hundred seventy-three thousand, four hundred forty".